Pediatrics

Survivors of Kawasaki disease remain at a higher long-term risk for cardiovascular events into young adulthood, including myocardial infarction, compared to people without the disease, new evidence reveals. The elevated risks emerged in survivors both with and without cardiovascular involvement at the time of initial diagnosis.

Overall risk of cardiovascular events was highest in the first year following Kawasaki disease diagnosis, and about 10 times greater than in healthy children, Cal Robinson, MD, said during a press conference at the virtual annual meeting of the American College of Rheumatology.

“The risk gradually decreased over time. However, even 10 years after diagnosis of their illness, they still had a 39% higher risk,” said study author Dr. Robinson, a PGY4 pediatric nephrology fellow at The Hospital for Sick Children in Toronto.

Dr. Robinson also put the numbers in perspective. “We fully acknowledged these are very rare events in children, especially healthy children, which is why we needed such a large cohort to study this. Interpret the numbers cautiously.”

In terms of patient and family counseling, “I would say children with Kawasaki disease have a higher risk of myocardial infarction, but the absolute risk is still low,” he added. For example, 16 Kawasaki disease survivors experienced a heart attack during follow-up, or 0.4% of the affected study population, compared to a rate of 0.1% among matched controls.

“These families are often very frightened after the initial Kawasaki disease diagnosis,” Dr. Robinson said. “We have to balance some discussion with what we know about Kawasaki disease without overly scaring or terrifying these families, who are already anxious.”

To quantify the incidence and timing of cardiovascular events and cardiac disease following diagnosis, Dr. Robinson and colleagues assessed large databases representing approximately 3 million children. They focused on children hospitalized with a Kawasaki disease diagnosis between 1995 and 2018. These children had a median length of stay of 3 days and 2.5% were admitted to critical care. The investigators matched his population 1:100 to unaffected children in Ontario.

Follow-up was up to 24 years (median, 11 years) in this retrospective, population-based cohort study.

Risks raised over a decade and beyond

Compared to matched controls, Kawasaki disease survivors had a higher risk for a cardiac event in the first year following diagnosis (adjusted hazard ratio, 11.65; 95% confidence interval, 10.34-13.13). The 1- to 5-year risk was lower (aHR, 3.35), a trend that continued between 5 and 10 years (aHR, 1.87) and as well as after more than 10 years (aHR, 1.39).

The risk of major adverse cardiac events (MACE, a composite of myocardial infarction, stroke, or cardiovascular death) was likewise highest in the first year after diagnosis (aHR, 3.27), followed by a 51% greater risk at 1-5 years, a 113% increased risk at 5-10 years, and a 17% elevated risk after 10 years.

The investigators compared the 144 Kawasaki disease survivors who experienced a coronary artery aneurysm (CAA) within 90 days of hospital admission to the 4,453 others who did not have a CAA. The risk for a composite cardiovascular event was elevated at each time point among those with a history of CAA, especially in the first year. The adjusted HR was 33.12 in the CAA group versus 10.44 in the non-CAA group.

“The most interesting finding of this study was that children with Kawasaki syndrome are at higher risk for composite cardiovascular events and major adverse cardiac events even if they were not diagnosed with coronary artery aneurysm,” session comoderator Shervin Assassi, MD, professor of medicine and director of division of rheumatology at the University of Texas Health Science Center at Houston, said when asked to comment.

Dr. Robinson and colleagues also looked at outcomes based on presence or absence of coronary involvement at the time of Kawasaki disease diagnosis. For example, among those with initial coronary involvement, 15% later experienced a cardiovascular event and 10% experienced a major cardiovascular event.

“However, we were specifically interested in looking at children without initial coronary involvement. In this group, we also found these children were at increased risk for cardiovascular events compared to children without Kawasaki disease,” Dr. Robinson said. He said the distinction is important because approximately 95% of children diagnosed with Kawasaki disease do not feature initial coronary involvement.

In terms of clinical care, “our data provides an early signal that Kawasaki disease survivors – including those without initial coronary involvement – may be at higher risk of cardiovascular events into early adulthood.”
 

A call for closer monitoring

“Based on our results, we find that Kawasaki disease survivors may benefit from additional follow-up and surveillance for cardiovascular disease risk factors, such as obesity, high blood pressure, and high cholesterol,” Dr. Robinson said. Early identification of heightened risk could allow physicians to more closely monitor this subgroup and emphasize potentially beneficial lifestyle modifications, including increasing physical activity, implementing a heart healthy diet, and avoiding smoking.

Mortality was not significantly different between groups. “Despite the risk of cardiac events we found, death was uncommon,” Dr. Robinson said. Among children with Kawasaki disease, 1 in 500 died during follow-up, so “the risk of death was actually lower than for children without Kawasaki disease.”

Similar findings of lower mortality have been reported in research out of Japan, he added during a plenary presentation at ACR 2020. Future research is warranted to evaluate this finding further, Dr. Robinson said.
 

Future plans

Going forward, the investigators plan to evaluate noncardiovascular outcomes in this patient population. They would also like to examine health care utilization following a diagnosis of Kawasaki disease “to better understand what kind of follow-up is happening now in Ontario,” Dr. Robinson said.

Another unanswered question is whether the cardiovascular events observed in the study stem from atherosclerotic disease or a different mechanism among survivors of Kawasaki disease.

The research was supported by a McMaster University Resident Research Grant, a Hamilton Health Sciences New Investigator Award, and Ontario’s Institute for Clinical Evaluative Sciences. Dr. Robinson had no relevant financial disclosures.

SOURCE: Robinson C et al. Arthritis Rheumatol. 2020;72(suppl 10): Abstract 0937.

Survivors of Kawasaki disease remain at a higher long-term risk for cardiovascular events into young adulthood, including myocardial infarction, compared to people without the disease, new evidence reveals. The elevated risks emerged in survivors both with and without cardiovascular involvement at the time of initial diagnosis.

Overall risk of cardiovascular events was highest in the first year following Kawasaki disease diagnosis, and about 10 times greater than in healthy children, Cal Robinson, MD, said during a press conference at the virtual annual meeting of the American College of Rheumatology.

“The risk gradually decreased over time. However, even 10 years after diagnosis of their illness, they still had a 39% higher risk,” said study author Dr. Robinson, a PGY4 pediatric nephrology fellow at The Hospital for Sick Children in Toronto.

Dr. Robinson also put the numbers in perspective. “We fully acknowledged these are very rare events in children, especially healthy children, which is why we needed such a large cohort to study this. Interpret the numbers cautiously.”

In terms of patient and family counseling, “I would say children with Kawasaki disease have a higher risk of myocardial infarction, but the absolute risk is still low,” he added. For example, 16 Kawasaki disease survivors experienced a heart attack during follow-up, or 0.4% of the affected study population, compared to a rate of 0.1% among matched controls.

“These families are often very frightened after the initial Kawasaki disease diagnosis,” Dr. Robinson said. “We have to balance some discussion with what we know about Kawasaki disease without overly scaring or terrifying these families, who are already anxious.”

To quantify the incidence and timing of cardiovascular events and cardiac disease following diagnosis, Dr. Robinson and colleagues assessed large databases representing approximately 3 million children. They focused on children hospitalized with a Kawasaki disease diagnosis between 1995 and 2018. These children had a median length of stay of 3 days and 2.5% were admitted to critical care. The investigators matched his population 1:100 to unaffected children in Ontario.

Follow-up was up to 24 years (median, 11 years) in this retrospective, population-based cohort study.

Risks raised over a decade and beyond

Compared to matched controls, Kawasaki disease survivors had a higher risk for a cardiac event in the first year following diagnosis (adjusted hazard ratio, 11.65; 95% confidence interval, 10.34-13.13). The 1- to 5-year risk was lower (aHR, 3.35), a trend that continued between 5 and 10 years (aHR, 1.87) and as well as after more than 10 years (aHR, 1.39).

The risk of major adverse cardiac events (MACE, a composite of myocardial infarction, stroke, or cardiovascular death) was likewise highest in the first year after diagnosis (aHR, 3.27), followed by a 51% greater risk at 1-5 years, a 113% increased risk at 5-10 years, and a 17% elevated risk after 10 years.

The investigators compared the 144 Kawasaki disease survivors who experienced a coronary artery aneurysm (CAA) within 90 days of hospital admission to the 4,453 others who did not have a CAA. The risk for a composite cardiovascular event was elevated at each time point among those with a history of CAA, especially in the first year. The adjusted HR was 33.12 in the CAA group versus 10.44 in the non-CAA group.

“The most interesting finding of this study was that children with Kawasaki syndrome are at higher risk for composite cardiovascular events and major adverse cardiac events even if they were not diagnosed with coronary artery aneurysm,” session comoderator Shervin Assassi, MD, professor of medicine and director of division of rheumatology at the University of Texas Health Science Center at Houston, said when asked to comment.

Dr. Robinson and colleagues also looked at outcomes based on presence or absence of coronary involvement at the time of Kawasaki disease diagnosis. For example, among those with initial coronary involvement, 15% later experienced a cardiovascular event and 10% experienced a major cardiovascular event.

“However, we were specifically interested in looking at children without initial coronary involvement. In this group, we also found these children were at increased risk for cardiovascular events compared to children without Kawasaki disease,” Dr. Robinson said. He said the distinction is important because approximately 95% of children diagnosed with Kawasaki disease do not feature initial coronary involvement.

In terms of clinical care, “our data provides an early signal that Kawasaki disease survivors – including those without initial coronary involvement – may be at higher risk of cardiovascular events into early adulthood.”
 

A call for closer monitoring

“Based on our results, we find that Kawasaki disease survivors may benefit from additional follow-up and surveillance for cardiovascular disease risk factors, such as obesity, high blood pressure, and high cholesterol,” Dr. Robinson said. Early identification of heightened risk could allow physicians to more closely monitor this subgroup and emphasize potentially beneficial lifestyle modifications, including increasing physical activity, implementing a heart healthy diet, and avoiding smoking.

Mortality was not significantly different between groups. “Despite the risk of cardiac events we found, death was uncommon,” Dr. Robinson said. Among children with Kawasaki disease, 1 in 500 died during follow-up, so “the risk of death was actually lower than for children without Kawasaki disease.”

Similar findings of lower mortality have been reported in research out of Japan, he added during a plenary presentation at ACR 2020. Future research is warranted to evaluate this finding further, Dr. Robinson said.
 

Future plans

Going forward, the investigators plan to evaluate noncardiovascular outcomes in this patient population. They would also like to examine health care utilization following a diagnosis of Kawasaki disease “to better understand what kind of follow-up is happening now in Ontario,” Dr. Robinson said.

Another unanswered question is whether the cardiovascular events observed in the study stem from atherosclerotic disease or a different mechanism among survivors of Kawasaki disease.

The research was supported by a McMaster University Resident Research Grant, a Hamilton Health Sciences New Investigator Award, and Ontario’s Institute for Clinical Evaluative Sciences. Dr. Robinson had no relevant financial disclosures.

SOURCE: Robinson C et al. Arthritis Rheumatol. 2020;72(suppl 10): Abstract 0937.

Survivors of Kawasaki disease remain at a higher long-term risk for cardiovascular events into young adulthood, including myocardial infarction, compared to people without the disease, new evidence reveals. The elevated risks emerged in survivors both with and without cardiovascular involvement at the time of initial diagnosis.

Overall risk of cardiovascular events was highest in the first year following Kawasaki disease diagnosis, and about 10 times greater than in healthy children, Cal Robinson, MD, said during a press conference at the virtual annual meeting of the American College of Rheumatology.

“The risk gradually decreased over time. However, even 10 years after diagnosis of their illness, they still had a 39% higher risk,” said study author Dr. Robinson, a PGY4 pediatric nephrology fellow at The Hospital for Sick Children in Toronto.

Dr. Robinson also put the numbers in perspective. “We fully acknowledged these are very rare events in children, especially healthy children, which is why we needed such a large cohort to study this. Interpret the numbers cautiously.”

In terms of patient and family counseling, “I would say children with Kawasaki disease have a higher risk of myocardial infarction, but the absolute risk is still low,” he added. For example, 16 Kawasaki disease survivors experienced a heart attack during follow-up, or 0.4% of the affected study population, compared to a rate of 0.1% among matched controls.

“These families are often very frightened after the initial Kawasaki disease diagnosis,” Dr. Robinson said. “We have to balance some discussion with what we know about Kawasaki disease without overly scaring or terrifying these families, who are already anxious.”

To quantify the incidence and timing of cardiovascular events and cardiac disease following diagnosis, Dr. Robinson and colleagues assessed large databases representing approximately 3 million children. They focused on children hospitalized with a Kawasaki disease diagnosis between 1995 and 2018. These children had a median length of stay of 3 days and 2.5% were admitted to critical care. The investigators matched his population 1:100 to unaffected children in Ontario.

Follow-up was up to 24 years (median, 11 years) in this retrospective, population-based cohort study.

Risks raised over a decade and beyond

Compared to matched controls, Kawasaki disease survivors had a higher risk for a cardiac event in the first year following diagnosis (adjusted hazard ratio, 11.65; 95% confidence interval, 10.34-13.13). The 1- to 5-year risk was lower (aHR, 3.35), a trend that continued between 5 and 10 years (aHR, 1.87) and as well as after more than 10 years (aHR, 1.39).

The risk of major adverse cardiac events (MACE, a composite of myocardial infarction, stroke, or cardiovascular death) was likewise highest in the first year after diagnosis (aHR, 3.27), followed by a 51% greater risk at 1-5 years, a 113% increased risk at 5-10 years, and a 17% elevated risk after 10 years.

The investigators compared the 144 Kawasaki disease survivors who experienced a coronary artery aneurysm (CAA) within 90 days of hospital admission to the 4,453 others who did not have a CAA. The risk for a composite cardiovascular event was elevated at each time point among those with a history of CAA, especially in the first year. The adjusted HR was 33.12 in the CAA group versus 10.44 in the non-CAA group.

“The most interesting finding of this study was that children with Kawasaki syndrome are at higher risk for composite cardiovascular events and major adverse cardiac events even if they were not diagnosed with coronary artery aneurysm,” session comoderator Shervin Assassi, MD, professor of medicine and director of division of rheumatology at the University of Texas Health Science Center at Houston, said when asked to comment.

Dr. Robinson and colleagues also looked at outcomes based on presence or absence of coronary involvement at the time of Kawasaki disease diagnosis. For example, among those with initial coronary involvement, 15% later experienced a cardiovascular event and 10% experienced a major cardiovascular event.

“However, we were specifically interested in looking at children without initial coronary involvement. In this group, we also found these children were at increased risk for cardiovascular events compared to children without Kawasaki disease,” Dr. Robinson said. He said the distinction is important because approximately 95% of children diagnosed with Kawasaki disease do not feature initial coronary involvement.

In terms of clinical care, “our data provides an early signal that Kawasaki disease survivors – including those without initial coronary involvement – may be at higher risk of cardiovascular events into early adulthood.”
 

A call for closer monitoring

“Based on our results, we find that Kawasaki disease survivors may benefit from additional follow-up and surveillance for cardiovascular disease risk factors, such as obesity, high blood pressure, and high cholesterol,” Dr. Robinson said. Early identification of heightened risk could allow physicians to more closely monitor this subgroup and emphasize potentially beneficial lifestyle modifications, including increasing physical activity, implementing a heart healthy diet, and avoiding smoking.

Mortality was not significantly different between groups. “Despite the risk of cardiac events we found, death was uncommon,” Dr. Robinson said. Among children with Kawasaki disease, 1 in 500 died during follow-up, so “the risk of death was actually lower than for children without Kawasaki disease.”

Similar findings of lower mortality have been reported in research out of Japan, he added during a plenary presentation at ACR 2020. Future research is warranted to evaluate this finding further, Dr. Robinson said.
 

Future plans

Going forward, the investigators plan to evaluate noncardiovascular outcomes in this patient population. They would also like to examine health care utilization following a diagnosis of Kawasaki disease “to better understand what kind of follow-up is happening now in Ontario,” Dr. Robinson said.

Another unanswered question is whether the cardiovascular events observed in the study stem from atherosclerotic disease or a different mechanism among survivors of Kawasaki disease.

The research was supported by a McMaster University Resident Research Grant, a Hamilton Health Sciences New Investigator Award, and Ontario’s Institute for Clinical Evaluative Sciences. Dr. Robinson had no relevant financial disclosures.

SOURCE: Robinson C et al. Arthritis Rheumatol. 2020;72(suppl 10): Abstract 0937.

People taking even low-dose methotrexate need tuberculosis screening and ongoing clinical care if they live in areas where TB is common, results of a study presented at the virtual annual meeting of the American College of Rheumatology suggest.

Coauthor Carol Hitchon, MD, MSc, a rheumatologist with the University of Manitoba in Winnipeg, who presented the findings, warned that methotrexate (MTX) users who also take corticosteroids or other immunosuppressants are at particular risk and need TB screening.

Current management guidelines for rheumatic disease address TB in relation to biologics, but not in relation to methotrexate, Dr. Hitchon said.

“We know that methotrexate is the foundational DMARD [disease-modifying antirheumatic drug] for many rheumatic diseases, especially rheumatoid arthritis,” Dr. Hitchon noted at a press conference. “It’s safe and effective when dosed properly. However, methotrexate does have the potential for significant liver toxicity as well as infection, particularly for infectious organisms that are targeted by cell-mediated immunity, and TB is one of those agents.”

Using multiple databases, researchers conducted a systematic review of the literature published from 1990 to 2018 on TB rates among people who take less than 30 mg of methotrexate a week. Of the 4,700 studies they examined, 31 fit the criteria for this analysis.

They collected data on tuberculosis incidence or new TB diagnoses vs. reactivation of latent TB infection as well as TB outcomes, such as pulmonary symptoms, dissemination, and mortality.

They found a modest increase in the risk of TB infections in the setting of low-dose methotrexate. In addition, rates of TB in people with rheumatic disease who are treated with either methotrexate or biologics are generally higher than in the general population.

They also found that methotrexate users had higher rates of the type of TB that spreads beyond a patient’s lungs, compared with the general population.

Safety of INH with methotrexate

Researchers also looked at the safety of isoniazid (INH), the antibiotic used to treat TB, and found that isoniazid-related liver toxicity and neutropenia were more common when people took the antibiotic along with methotrexate, but those effects were usually reversible.

TB is endemic in various regions around the world. Historically there hasn’t been much rheumatology capacity in many of these areas, but as that capacity increases more people who are at high risk for developing or reactivating TB will be receiving methotrexate for rheumatic diseases, Dr. Hitchon said.

“It’s prudent for people managing patients who may be at higher risk for TB either from where they live or from where they travel that we should have a high suspicion for TB and consider screening as part of our workup in the course of initiating treatment like methotrexate,” she said.

Narender Annapureddy, MD, a rheumatologist at Vanderbilt University, Nashville, Tenn., who was not involved in the research, pointed out that a limitation of the work is that only 27% of the studies are from developing countries, which are more likely to have endemic TB, and those studies had very few cases.

“This finding needs to be studied in larger populations in TB-endemic areas and in high-risk populations,” he said in an interview.

As for practice implications in the United States, Dr. Annapureddy noted that TB is rare in the United States and most of the cases occur in people born in other countries.

“This population may be at risk for TB and should probably be screened for TB before initiating methotrexate,” he said. “Since biologics are usually the next step, especially in RA after patients fail methotrexate, having information on TB status may also help guide management options after MTX failure.

“Since high-dose steroids are another important risk factor for TB activation,” Dr. Annapureddy continued, “rheumatologists should likely consider screening patients who are going to be on moderate to high doses of steroids with MTX.”

A version of this article originally appeared on Medscape.com.

People taking even low-dose methotrexate need tuberculosis screening and ongoing clinical care if they live in areas where TB is common, results of a study presented at the virtual annual meeting of the American College of Rheumatology suggest.

Coauthor Carol Hitchon, MD, MSc, a rheumatologist with the University of Manitoba in Winnipeg, who presented the findings, warned that methotrexate (MTX) users who also take corticosteroids or other immunosuppressants are at particular risk and need TB screening.

Current management guidelines for rheumatic disease address TB in relation to biologics, but not in relation to methotrexate, Dr. Hitchon said.

“We know that methotrexate is the foundational DMARD [disease-modifying antirheumatic drug] for many rheumatic diseases, especially rheumatoid arthritis,” Dr. Hitchon noted at a press conference. “It’s safe and effective when dosed properly. However, methotrexate does have the potential for significant liver toxicity as well as infection, particularly for infectious organisms that are targeted by cell-mediated immunity, and TB is one of those agents.”

Using multiple databases, researchers conducted a systematic review of the literature published from 1990 to 2018 on TB rates among people who take less than 30 mg of methotrexate a week. Of the 4,700 studies they examined, 31 fit the criteria for this analysis.

They collected data on tuberculosis incidence or new TB diagnoses vs. reactivation of latent TB infection as well as TB outcomes, such as pulmonary symptoms, dissemination, and mortality.

They found a modest increase in the risk of TB infections in the setting of low-dose methotrexate. In addition, rates of TB in people with rheumatic disease who are treated with either methotrexate or biologics are generally higher than in the general population.

They also found that methotrexate users had higher rates of the type of TB that spreads beyond a patient’s lungs, compared with the general population.

Safety of INH with methotrexate

Researchers also looked at the safety of isoniazid (INH), the antibiotic used to treat TB, and found that isoniazid-related liver toxicity and neutropenia were more common when people took the antibiotic along with methotrexate, but those effects were usually reversible.

TB is endemic in various regions around the world. Historically there hasn’t been much rheumatology capacity in many of these areas, but as that capacity increases more people who are at high risk for developing or reactivating TB will be receiving methotrexate for rheumatic diseases, Dr. Hitchon said.

“It’s prudent for people managing patients who may be at higher risk for TB either from where they live or from where they travel that we should have a high suspicion for TB and consider screening as part of our workup in the course of initiating treatment like methotrexate,” she said.

Narender Annapureddy, MD, a rheumatologist at Vanderbilt University, Nashville, Tenn., who was not involved in the research, pointed out that a limitation of the work is that only 27% of the studies are from developing countries, which are more likely to have endemic TB, and those studies had very few cases.

“This finding needs to be studied in larger populations in TB-endemic areas and in high-risk populations,” he said in an interview.

As for practice implications in the United States, Dr. Annapureddy noted that TB is rare in the United States and most of the cases occur in people born in other countries.

“This population may be at risk for TB and should probably be screened for TB before initiating methotrexate,” he said. “Since biologics are usually the next step, especially in RA after patients fail methotrexate, having information on TB status may also help guide management options after MTX failure.

“Since high-dose steroids are another important risk factor for TB activation,” Dr. Annapureddy continued, “rheumatologists should likely consider screening patients who are going to be on moderate to high doses of steroids with MTX.”

A version of this article originally appeared on Medscape.com.

People taking even low-dose methotrexate need tuberculosis screening and ongoing clinical care if they live in areas where TB is common, results of a study presented at the virtual annual meeting of the American College of Rheumatology suggest.

Coauthor Carol Hitchon, MD, MSc, a rheumatologist with the University of Manitoba in Winnipeg, who presented the findings, warned that methotrexate (MTX) users who also take corticosteroids or other immunosuppressants are at particular risk and need TB screening.

Current management guidelines for rheumatic disease address TB in relation to biologics, but not in relation to methotrexate, Dr. Hitchon said.

“We know that methotrexate is the foundational DMARD [disease-modifying antirheumatic drug] for many rheumatic diseases, especially rheumatoid arthritis,” Dr. Hitchon noted at a press conference. “It’s safe and effective when dosed properly. However, methotrexate does have the potential for significant liver toxicity as well as infection, particularly for infectious organisms that are targeted by cell-mediated immunity, and TB is one of those agents.”

Using multiple databases, researchers conducted a systematic review of the literature published from 1990 to 2018 on TB rates among people who take less than 30 mg of methotrexate a week. Of the 4,700 studies they examined, 31 fit the criteria for this analysis.

They collected data on tuberculosis incidence or new TB diagnoses vs. reactivation of latent TB infection as well as TB outcomes, such as pulmonary symptoms, dissemination, and mortality.

They found a modest increase in the risk of TB infections in the setting of low-dose methotrexate. In addition, rates of TB in people with rheumatic disease who are treated with either methotrexate or biologics are generally higher than in the general population.

They also found that methotrexate users had higher rates of the type of TB that spreads beyond a patient’s lungs, compared with the general population.

Safety of INH with methotrexate

Researchers also looked at the safety of isoniazid (INH), the antibiotic used to treat TB, and found that isoniazid-related liver toxicity and neutropenia were more common when people took the antibiotic along with methotrexate, but those effects were usually reversible.

TB is endemic in various regions around the world. Historically there hasn’t been much rheumatology capacity in many of these areas, but as that capacity increases more people who are at high risk for developing or reactivating TB will be receiving methotrexate for rheumatic diseases, Dr. Hitchon said.

“It’s prudent for people managing patients who may be at higher risk for TB either from where they live or from where they travel that we should have a high suspicion for TB and consider screening as part of our workup in the course of initiating treatment like methotrexate,” she said.

Narender Annapureddy, MD, a rheumatologist at Vanderbilt University, Nashville, Tenn., who was not involved in the research, pointed out that a limitation of the work is that only 27% of the studies are from developing countries, which are more likely to have endemic TB, and those studies had very few cases.

“This finding needs to be studied in larger populations in TB-endemic areas and in high-risk populations,” he said in an interview.

As for practice implications in the United States, Dr. Annapureddy noted that TB is rare in the United States and most of the cases occur in people born in other countries.

“This population may be at risk for TB and should probably be screened for TB before initiating methotrexate,” he said. “Since biologics are usually the next step, especially in RA after patients fail methotrexate, having information on TB status may also help guide management options after MTX failure.

“Since high-dose steroids are another important risk factor for TB activation,” Dr. Annapureddy continued, “rheumatologists should likely consider screening patients who are going to be on moderate to high doses of steroids with MTX.”

A version of this article originally appeared on Medscape.com.

A history of prior depressive illness conferred a sevenfold increased risk of developing treatment-limiting mood symptoms in patients on isotretinoin for acne in a large Scottish observational study, Sanaa Butt, MD, reported at the virtual annual congress of the European Academy of Dermatology and Venereology.

© Ocskay Bence/Fotolia.com

This was, however, the sole identifiable risk factor for treatment-limiting depressive symptoms in acne patients on isotretinoin in the study of 3,151 consecutive acne patients taking isotretinoin. There was no significant difference between those who did or did not develop depression on the oral retinoid in terms of age, gender, or daily dose of the drug at the time it was discontinued.

“Depressive symptoms occurred at any time from the date of initiation of isotretinoin up to 6 months into therapy, with no identifiable peak time period,” said Dr. Butt, a dermatologist with the U.K. National Health Service Tayside district at Ninewells Hospital, Dundee, Scotland. “Lower doses appear not to be protective,” she added.

The Tayside district has a catchment of roughly 450,000 people. The local population tends to stay put because Tayside is an economically disadvantaged and remote part of Scotland. There are very few private practice dermatologists in the area, so Dr. Butt and coinvestigators are confident their observational study of NHS patients captured the great majority of isotretinoin users in northern Scotland.

The investigators utilized software to analyze the contents of more than 8,000 digitized letters exchanged between NHS Tayside dermatologists and general practitioners during 2005-2018, zeroing in on 3,151 consecutive patients on isotretinoin for acne and 158 on the drug for other conditions, most often rosacea or folliculitis. They then drilled down further through the letters, electronically searching for key words such as suicide, depression, and anxiety. In this way, they ultimately identified 30 patients who discontinued the drug because they developed depressive symptoms. All 30 were on the drug for acne.

The annual incidence of treatment-limiting depressive mood changes was 0.96%, a figure that remained steady over the 13-year study period, even though prescribing of isotretinoin increased over time. This flat incidence rate effectively rules out the potential for confounding because of assessor bias, especially since many different NHS dermatologists were prescribing the drug, Dr. Butt said.

Half of acne patients prescribed isotretinoin were female and 50% were male. And 15 cases of treatment discontinuation caused by development of depressive symptoms occurred in females, 15 in males. A history of past depressive illness was present in 9.3% of females who started on isotretinoin and in 4.5% of the males. The relative risk of treatment-limiting depressive mood changes was increased 790% among females with a prior history of depressive illness and 440% in males with such a history.

Dr. Butt reported having no financial conflicts regarding her NHS-funded study.

bjancin@mdedge.com

A history of prior depressive illness conferred a sevenfold increased risk of developing treatment-limiting mood symptoms in patients on isotretinoin for acne in a large Scottish observational study, Sanaa Butt, MD, reported at the virtual annual congress of the European Academy of Dermatology and Venereology.

© Ocskay Bence/Fotolia.com

This was, however, the sole identifiable risk factor for treatment-limiting depressive symptoms in acne patients on isotretinoin in the study of 3,151 consecutive acne patients taking isotretinoin. There was no significant difference between those who did or did not develop depression on the oral retinoid in terms of age, gender, or daily dose of the drug at the time it was discontinued.

“Depressive symptoms occurred at any time from the date of initiation of isotretinoin up to 6 months into therapy, with no identifiable peak time period,” said Dr. Butt, a dermatologist with the U.K. National Health Service Tayside district at Ninewells Hospital, Dundee, Scotland. “Lower doses appear not to be protective,” she added.

The Tayside district has a catchment of roughly 450,000 people. The local population tends to stay put because Tayside is an economically disadvantaged and remote part of Scotland. There are very few private practice dermatologists in the area, so Dr. Butt and coinvestigators are confident their observational study of NHS patients captured the great majority of isotretinoin users in northern Scotland.

The investigators utilized software to analyze the contents of more than 8,000 digitized letters exchanged between NHS Tayside dermatologists and general practitioners during 2005-2018, zeroing in on 3,151 consecutive patients on isotretinoin for acne and 158 on the drug for other conditions, most often rosacea or folliculitis. They then drilled down further through the letters, electronically searching for key words such as suicide, depression, and anxiety. In this way, they ultimately identified 30 patients who discontinued the drug because they developed depressive symptoms. All 30 were on the drug for acne.

The annual incidence of treatment-limiting depressive mood changes was 0.96%, a figure that remained steady over the 13-year study period, even though prescribing of isotretinoin increased over time. This flat incidence rate effectively rules out the potential for confounding because of assessor bias, especially since many different NHS dermatologists were prescribing the drug, Dr. Butt said.

Half of acne patients prescribed isotretinoin were female and 50% were male. And 15 cases of treatment discontinuation caused by development of depressive symptoms occurred in females, 15 in males. A history of past depressive illness was present in 9.3% of females who started on isotretinoin and in 4.5% of the males. The relative risk of treatment-limiting depressive mood changes was increased 790% among females with a prior history of depressive illness and 440% in males with such a history.

Dr. Butt reported having no financial conflicts regarding her NHS-funded study.

bjancin@mdedge.com

A history of prior depressive illness conferred a sevenfold increased risk of developing treatment-limiting mood symptoms in patients on isotretinoin for acne in a large Scottish observational study, Sanaa Butt, MD, reported at the virtual annual congress of the European Academy of Dermatology and Venereology.

© Ocskay Bence/Fotolia.com

This was, however, the sole identifiable risk factor for treatment-limiting depressive symptoms in acne patients on isotretinoin in the study of 3,151 consecutive acne patients taking isotretinoin. There was no significant difference between those who did or did not develop depression on the oral retinoid in terms of age, gender, or daily dose of the drug at the time it was discontinued.

“Depressive symptoms occurred at any time from the date of initiation of isotretinoin up to 6 months into therapy, with no identifiable peak time period,” said Dr. Butt, a dermatologist with the U.K. National Health Service Tayside district at Ninewells Hospital, Dundee, Scotland. “Lower doses appear not to be protective,” she added.

The Tayside district has a catchment of roughly 450,000 people. The local population tends to stay put because Tayside is an economically disadvantaged and remote part of Scotland. There are very few private practice dermatologists in the area, so Dr. Butt and coinvestigators are confident their observational study of NHS patients captured the great majority of isotretinoin users in northern Scotland.

The investigators utilized software to analyze the contents of more than 8,000 digitized letters exchanged between NHS Tayside dermatologists and general practitioners during 2005-2018, zeroing in on 3,151 consecutive patients on isotretinoin for acne and 158 on the drug for other conditions, most often rosacea or folliculitis. They then drilled down further through the letters, electronically searching for key words such as suicide, depression, and anxiety. In this way, they ultimately identified 30 patients who discontinued the drug because they developed depressive symptoms. All 30 were on the drug for acne.

The annual incidence of treatment-limiting depressive mood changes was 0.96%, a figure that remained steady over the 13-year study period, even though prescribing of isotretinoin increased over time. This flat incidence rate effectively rules out the potential for confounding because of assessor bias, especially since many different NHS dermatologists were prescribing the drug, Dr. Butt said.

Half of acne patients prescribed isotretinoin were female and 50% were male. And 15 cases of treatment discontinuation caused by development of depressive symptoms occurred in females, 15 in males. A history of past depressive illness was present in 9.3% of females who started on isotretinoin and in 4.5% of the males. The relative risk of treatment-limiting depressive mood changes was increased 790% among females with a prior history of depressive illness and 440% in males with such a history.

Dr. Butt reported having no financial conflicts regarding her NHS-funded study.

bjancin@mdedge.com

The Diagnosis: Monilethrix

Trichoscopy showed a beaded appearance of the hair shafts (Figure, A). Light microscopy demonstrated normal medullated nodes of hair coupled with internodal, thin, nonmedullated hair at regular intervals (Figure, B). Clinical and trichoscopic findings led to a diagnosis of monilethrix.

Monilethrix is a genetic hair disorder characterized by regular periodic thinning of the hair shafts, giving the strands a beaded appearance. The hair tends to break at these constricted parts, resulting in short hairs. Nodosities represent the normal hair shaft, whereas the constricted points are the site of the defect. The hair tends to be normal at birth and then becomes short, fragile, and brittle within months, leading to hypotrichosis, particularly on the occipital scalp.¹ Monilethrix also may involve the eyebrows and eyelashes in addition to scalp hair. Follicular hyperkeratotic papules with perifollicular erythema frequently are noted on the occipital area. Monilethrix can be inherited in an autosomal-dominant fashion with mutations involving KRT81, KRT83, and KRT86, which code for the type II hair keratins Hb1, Hb3, and Hb6, respectively. The autosomal-recessive form is caused by mutations in the DSG4 gene, coding for the desmoglein 4 protein.2 Trichoscopy or light microscopy is essential to establish a diagnosis of monilethrix. Trichoscopy is an easy and rapid tool that is utilized to illustrate the beaded appearance of the hair shafts.³ Light microscopy shows the distinctive nodes that are medullated, with a normal hair diameter alternating with the internodes, or constrictions, that are nonmedullated and represent the sites of fracture.¹ Monilethrix can improve by puberty. There is no definitive treatment; however, some patients show considerable improvement on minoxidil.⁴ Treatment with minoxidil was initiated in this patient; however, she was lost to follow-up.

Genetic hair disorders are rare and can be an isolated phenomenon or part of concurrent genetic syndromes. Therefore, thorough clinical examination of other ectodermal structures such as the nails and teeth is crucial as well as obtaining a detailed family history and review of systems to exclude other syndromes.² Hypotrichosis simplex is characterized by hair loss exclusively on the scalp, sparing other ectodermal structures and with no systemic abnormalities. Ectodermal dysplasia is a heterogeneous group of disorders affecting not only the hair but also the teeth, nails, and sweat glands.² Pili torti is another rare genetic hair disorder that is characterized by twisting of the hair fiber on its own axis. It presents clinically as sparse, depigmented, lusterless hair that is easily broken. Light microscopy demonstrates twists of hair at irregular intervals. Pili annulati is characterized by bright and dark bands when viewed with reflected light. Unlike monilethrix, there is no fragility, and the hair can grow long.⁵

The Diagnosis: Monilethrix

Trichoscopy showed a beaded appearance of the hair shafts (Figure, A). Light microscopy demonstrated normal medullated nodes of hair coupled with internodal, thin, nonmedullated hair at regular intervals (Figure, B). Clinical and trichoscopic findings led to a diagnosis of monilethrix.

Monilethrix is a genetic hair disorder characterized by regular periodic thinning of the hair shafts, giving the strands a beaded appearance. The hair tends to break at these constricted parts, resulting in short hairs. Nodosities represent the normal hair shaft, whereas the constricted points are the site of the defect. The hair tends to be normal at birth and then becomes short, fragile, and brittle within months, leading to hypotrichosis, particularly on the occipital scalp.¹ Monilethrix also may involve the eyebrows and eyelashes in addition to scalp hair. Follicular hyperkeratotic papules with perifollicular erythema frequently are noted on the occipital area. Monilethrix can be inherited in an autosomal-dominant fashion with mutations involving KRT81, KRT83, and KRT86, which code for the type II hair keratins Hb1, Hb3, and Hb6, respectively. The autosomal-recessive form is caused by mutations in the DSG4 gene, coding for the desmoglein 4 protein.2 Trichoscopy or light microscopy is essential to establish a diagnosis of monilethrix. Trichoscopy is an easy and rapid tool that is utilized to illustrate the beaded appearance of the hair shafts.³ Light microscopy shows the distinctive nodes that are medullated, with a normal hair diameter alternating with the internodes, or constrictions, that are nonmedullated and represent the sites of fracture.¹ Monilethrix can improve by puberty. There is no definitive treatment; however, some patients show considerable improvement on minoxidil.⁴ Treatment with minoxidil was initiated in this patient; however, she was lost to follow-up.

Genetic hair disorders are rare and can be an isolated phenomenon or part of concurrent genetic syndromes. Therefore, thorough clinical examination of other ectodermal structures such as the nails and teeth is crucial as well as obtaining a detailed family history and review of systems to exclude other syndromes.² Hypotrichosis simplex is characterized by hair loss exclusively on the scalp, sparing other ectodermal structures and with no systemic abnormalities. Ectodermal dysplasia is a heterogeneous group of disorders affecting not only the hair but also the teeth, nails, and sweat glands.² Pili torti is another rare genetic hair disorder that is characterized by twisting of the hair fiber on its own axis. It presents clinically as sparse, depigmented, lusterless hair that is easily broken. Light microscopy demonstrates twists of hair at irregular intervals. Pili annulati is characterized by bright and dark bands when viewed with reflected light. Unlike monilethrix, there is no fragility, and the hair can grow long.⁵

The Diagnosis: Monilethrix

Trichoscopy showed a beaded appearance of the hair shafts (Figure, A). Light microscopy demonstrated normal medullated nodes of hair coupled with internodal, thin, nonmedullated hair at regular intervals (Figure, B). Clinical and trichoscopic findings led to a diagnosis of monilethrix.

Monilethrix is a genetic hair disorder characterized by regular periodic thinning of the hair shafts, giving the strands a beaded appearance. The hair tends to break at these constricted parts, resulting in short hairs. Nodosities represent the normal hair shaft, whereas the constricted points are the site of the defect. The hair tends to be normal at birth and then becomes short, fragile, and brittle within months, leading to hypotrichosis, particularly on the occipital scalp.¹ Monilethrix also may involve the eyebrows and eyelashes in addition to scalp hair. Follicular hyperkeratotic papules with perifollicular erythema frequently are noted on the occipital area. Monilethrix can be inherited in an autosomal-dominant fashion with mutations involving KRT81, KRT83, and KRT86, which code for the type II hair keratins Hb1, Hb3, and Hb6, respectively. The autosomal-recessive form is caused by mutations in the DSG4 gene, coding for the desmoglein 4 protein.2 Trichoscopy or light microscopy is essential to establish a diagnosis of monilethrix. Trichoscopy is an easy and rapid tool that is utilized to illustrate the beaded appearance of the hair shafts.³ Light microscopy shows the distinctive nodes that are medullated, with a normal hair diameter alternating with the internodes, or constrictions, that are nonmedullated and represent the sites of fracture.¹ Monilethrix can improve by puberty. There is no definitive treatment; however, some patients show considerable improvement on minoxidil.⁴ Treatment with minoxidil was initiated in this patient; however, she was lost to follow-up.

Genetic hair disorders are rare and can be an isolated phenomenon or part of concurrent genetic syndromes. Therefore, thorough clinical examination of other ectodermal structures such as the nails and teeth is crucial as well as obtaining a detailed family history and review of systems to exclude other syndromes.² Hypotrichosis simplex is characterized by hair loss exclusively on the scalp, sparing other ectodermal structures and with no systemic abnormalities. Ectodermal dysplasia is a heterogeneous group of disorders affecting not only the hair but also the teeth, nails, and sweat glands.² Pili torti is another rare genetic hair disorder that is characterized by twisting of the hair fiber on its own axis. It presents clinically as sparse, depigmented, lusterless hair that is easily broken. Light microscopy demonstrates twists of hair at irregular intervals. Pili annulati is characterized by bright and dark bands when viewed with reflected light. Unlike monilethrix, there is no fragility, and the hair can grow long.⁵

Home spirometry has become increasingly used among cystic fibrosis patients during the COVID-19 pandemic, and new research suggests that home devices perform reasonably well. Forced expiratory volume in 1 second (FEV₁) values were a bit lower than values seen in clinical spirometry performed in the same patient at a nearby time point, but the procedure reliably picked up decreases in FEV₁, potentially helping patients and clinicians spot exacerbations early.

“Home spirometry was sort of a curiosity that was slowly working its way into cystic fibrosis research in 2019, and then all of a sudden in 2020 it became front and center as the only way to continue with clinical monitoring and research in many cases,” Alexander Paynter, MS, a biostatistician at the Cystic Fibrosis Foundation’s Therapeutic Development Network Coordinating Center, said during a talk at the virtual North American Cystic Fibrosis Conference.

To better determine how closely home spirometry matches clinical spirometry, Mr. Paynter and his colleagues analyzed data from the eICE study, which included 267 cystic fibrosis patients aged 14 and over at 14 cystic fibrosis centers. They were randomized to use home spirometry as an early intervention to detect exacerbations, or to continue usual clinic care with visits to the clinic every 3 months. The dataset includes twice-weekly home spirometry values, with a full-year of follow-up data. The researchers compared the home spirometry data to the clinical data closest in time to it. Clinic spirometry data with no corresponding home data within 7 days were discarded.

There was an estimated difference of –2.01 mL between home and clinic tests, with home spirometry producing lower values (95% confidence interval, –3.56 to –0.45). “There is actually a bias in home spirometry as compared to clinic spirometry,” concluded Mr. Paynter.

One explanation for lower values in home spirometry is that users are inexperienced with the device. If that’s true, then agreement should improve over time, but the researchers didn’t see strong evidence of that. Among 44 patients who completed five clinical visits, there was a difference of –2.97 (standard deviation [SD], 10.51) at baseline, –1.66 at 3 months (SD, 13.49), –3.7 at 6 months (SD, 12.44), –0.86 at 9 months (SD, 13.73), and –0.53 at 12 months (SD, 13.35). Though there was improvement over time, “we don’t find a lot of evidence that this bias completely resolves,” said Mr. Paynter.

In fact, a more likely explanation is the presence of coaching by a technician during clinical spirometry, according to Robert J. Giusti, MD, clinical professor of pediatrics and director of the Pediatric Cystic Fibrosis Center at New York University. “When they’re doing it at home, they don’t do it with the same effort, so I think that coaching through telemedicine during the home spirometry would make that difference disappear,” he said when asked to comment on the study.

SOURCE: Alex Paynter et al. NACFC 2020. Poster 643.

Home spirometry has become increasingly used among cystic fibrosis patients during the COVID-19 pandemic, and new research suggests that home devices perform reasonably well. Forced expiratory volume in 1 second (FEV₁) values were a bit lower than values seen in clinical spirometry performed in the same patient at a nearby time point, but the procedure reliably picked up decreases in FEV₁, potentially helping patients and clinicians spot exacerbations early.

“Home spirometry was sort of a curiosity that was slowly working its way into cystic fibrosis research in 2019, and then all of a sudden in 2020 it became front and center as the only way to continue with clinical monitoring and research in many cases,” Alexander Paynter, MS, a biostatistician at the Cystic Fibrosis Foundation’s Therapeutic Development Network Coordinating Center, said during a talk at the virtual North American Cystic Fibrosis Conference.

To better determine how closely home spirometry matches clinical spirometry, Mr. Paynter and his colleagues analyzed data from the eICE study, which included 267 cystic fibrosis patients aged 14 and over at 14 cystic fibrosis centers. They were randomized to use home spirometry as an early intervention to detect exacerbations, or to continue usual clinic care with visits to the clinic every 3 months. The dataset includes twice-weekly home spirometry values, with a full-year of follow-up data. The researchers compared the home spirometry data to the clinical data closest in time to it. Clinic spirometry data with no corresponding home data within 7 days were discarded.

There was an estimated difference of –2.01 mL between home and clinic tests, with home spirometry producing lower values (95% confidence interval, –3.56 to –0.45). “There is actually a bias in home spirometry as compared to clinic spirometry,” concluded Mr. Paynter.

One explanation for lower values in home spirometry is that users are inexperienced with the device. If that’s true, then agreement should improve over time, but the researchers didn’t see strong evidence of that. Among 44 patients who completed five clinical visits, there was a difference of –2.97 (standard deviation [SD], 10.51) at baseline, –1.66 at 3 months (SD, 13.49), –3.7 at 6 months (SD, 12.44), –0.86 at 9 months (SD, 13.73), and –0.53 at 12 months (SD, 13.35). Though there was improvement over time, “we don’t find a lot of evidence that this bias completely resolves,” said Mr. Paynter.

In fact, a more likely explanation is the presence of coaching by a technician during clinical spirometry, according to Robert J. Giusti, MD, clinical professor of pediatrics and director of the Pediatric Cystic Fibrosis Center at New York University. “When they’re doing it at home, they don’t do it with the same effort, so I think that coaching through telemedicine during the home spirometry would make that difference disappear,” he said when asked to comment on the study.

SOURCE: Alex Paynter et al. NACFC 2020. Poster 643.

Home spirometry has become increasingly used among cystic fibrosis patients during the COVID-19 pandemic, and new research suggests that home devices perform reasonably well. Forced expiratory volume in 1 second (FEV₁) values were a bit lower than values seen in clinical spirometry performed in the same patient at a nearby time point, but the procedure reliably picked up decreases in FEV₁, potentially helping patients and clinicians spot exacerbations early.

“Home spirometry was sort of a curiosity that was slowly working its way into cystic fibrosis research in 2019, and then all of a sudden in 2020 it became front and center as the only way to continue with clinical monitoring and research in many cases,” Alexander Paynter, MS, a biostatistician at the Cystic Fibrosis Foundation’s Therapeutic Development Network Coordinating Center, said during a talk at the virtual North American Cystic Fibrosis Conference.

To better determine how closely home spirometry matches clinical spirometry, Mr. Paynter and his colleagues analyzed data from the eICE study, which included 267 cystic fibrosis patients aged 14 and over at 14 cystic fibrosis centers. They were randomized to use home spirometry as an early intervention to detect exacerbations, or to continue usual clinic care with visits to the clinic every 3 months. The dataset includes twice-weekly home spirometry values, with a full-year of follow-up data. The researchers compared the home spirometry data to the clinical data closest in time to it. Clinic spirometry data with no corresponding home data within 7 days were discarded.

There was an estimated difference of –2.01 mL between home and clinic tests, with home spirometry producing lower values (95% confidence interval, –3.56 to –0.45). “There is actually a bias in home spirometry as compared to clinic spirometry,” concluded Mr. Paynter.

One explanation for lower values in home spirometry is that users are inexperienced with the device. If that’s true, then agreement should improve over time, but the researchers didn’t see strong evidence of that. Among 44 patients who completed five clinical visits, there was a difference of –2.97 (standard deviation [SD], 10.51) at baseline, –1.66 at 3 months (SD, 13.49), –3.7 at 6 months (SD, 12.44), –0.86 at 9 months (SD, 13.73), and –0.53 at 12 months (SD, 13.35). Though there was improvement over time, “we don’t find a lot of evidence that this bias completely resolves,” said Mr. Paynter.

In fact, a more likely explanation is the presence of coaching by a technician during clinical spirometry, according to Robert J. Giusti, MD, clinical professor of pediatrics and director of the Pediatric Cystic Fibrosis Center at New York University. “When they’re doing it at home, they don’t do it with the same effort, so I think that coaching through telemedicine during the home spirometry would make that difference disappear,” he said when asked to comment on the study.

SOURCE: Alex Paynter et al. NACFC 2020. Poster 643.

As Emily Brown stood in a food pantry looking at her options, she felt alone. Up to that point, she had never struggled financially. But there she was, desperate to find safe food for her young daughter with food allergies. What she found was a jar of salsa and some potatoes.

“That was all that was available,” said Ms. Brown, who lives in Kansas City, Kansas. “It was just a desperate place.”

When she became a parent, Ms. Brown left her job for lack of child care that would accommodate her daughter’s allergies to peanuts, tree nuts, milk, eggs, wheat, and soy. When she and her husband then turned to a federal food assistance program, they found few allowable allergy substitutions. The closest allergy support group she could find was an hour away. She was almost always the only Black parent, and the only poor parent, there.

Ms. Brown called national food allergy advocacy organizations to ask for guidance to help poor families find safe food and medical resources, but she said she was told that wasn’t their focus. Support groups, fundraising activities, and advocacy efforts, plus clinical and research outreach, were targeted at wealthier – and White – families. Advertising rarely reflected families that looked like hers. She felt unseen.

“In many ways, food allergy is an invisible disease. The burden of the disease, the activities and energy it takes to avoid allergens, are mostly invisible to those not impacted,” Ms. Brown said. “Black and other minority patients often lack voice and visibility in the health care system. Add the additional burden of an invisible condition and you are in a really vulnerable position.”

An estimated 6 million children in the United States have food allergies, 40% of them with more than one. Though limited research has been done on race and class breakdowns, recent studies show that poor children and some groups of minority children not only have a higher incidence of food allergies than White children, but their families also have more difficulty accessing appropriate child care, safe food, medical care, and lifesaving medicine like epinephrine for them.

Black children are 7% more likely to have food allergies than white children, according to a 2020 study by Dr. Ruchi Gupta, MD, at Northwestern University, Chicago. To be sure, the study shows that Asian children are 24% more likely than White children to have food allergies. But Black and Hispanic children are disproportionately more likely to live in poor communities, to have asthma, and to suffer from systemic racism in the delivery of medical care.

And finding allergen-free food to keep allergic kids safe can be costly – in both time and money.

“Many times, a mother is frank and says: ‘I have $20-$40 to buy groceries for the week, and if I buy these foods that you are telling me to buy, I will not be able to feed my entire family,’” said Carla Davis, MD, director of the food allergy program at Houston’s Texas Children’s Hospital. “If you are diagnosed with a food allergy and you don’t have disposable income or disposable time, there is really no way that you will be able to alter your diet in a way that your child is going to stay away from their allergen.”

Fed up with the lack of support, Ms. Brown founded the Food Equality Initiative advocacy organization in 2014. It offers an online marketplace to income-eligible families in Kansas and Missouri who, with a doctor’s note about the allergy, can order free allergy-safe food to fit their needs.

Nationwide, though, families’ needs far outstrip what her group can offer – and the problem has gotten worse amid the economic squeeze of the COVID pandemic. Job losses and business closures have exacerbated the barriers to finding and affording nutritious food, according to a report from Feeding America, an association of food banks.

Ms. Brown said her organization more than doubled its clientele in March through August, compared with the same period in 2019. And though it currently serves only Missouri and Kansas, she said the organization has been fielding an increasing number of calls from across the country since the pandemic began.

For low-income minorities, who live disproportionately in food deserts, fresh and allergy-friendly foods can be especially expensive and difficult to find in the best of times.

Food assistance programs are heavily weighted to prepackaged and processed foods, which often include the very ingredients that are problematic. Black children are more likely to be allergic to wheat and soy than White children, and both Black and Hispanic children are more likely to be allergic to corn, shellfish, and fish, according to a 2016 study.

Some programs allow few allergy substitutions. For example, the federal Special Supplemental Nutrition Program for Women, Infants, and Children allows only canned beans as a substitute for peanut butter. While nutritionally similar, beans are not as easy to pack for a kid’s lunch. Ms. Brown questions why WIC won’t allow a seed butter, such as sunflower butter, instead. She said they are nutritionally and functionally similar and are offered as allergy substitutions in other food programs.

Making matters worse, low-income households pay more than twice as much as higher-income families for the emergency medical care their children receive for their allergies, according to a 2016 study by Dr. Gupta. The kids often arrive at the hospital in more distress because they lack safe food and allergy medications – and because asthma, which disproportionately hits Black and Puerto Rican children and low-income communities, complicates allergic reactions.

“So, in these vulnerable populations, it’s like a double whammy, and we see that reflected in the data,” said Lakiea Wright-Bello, MD, a medical director in specialty diagnostics at Thermo Fisher Scientific and an allergist at Brigham and Women’s Hospital in Boston.

Thomas and Dina Silvera, who are Black and Latina, lived this horror firsthand. After their 3-year-old son, Elijah-Alavi, died as a result of a dairy allergy when fed a grilled cheese instead of his allergen-free food at his preschool, they launched the Elijah-Alavi Foundation to address the dearth of information about food allergies and the critical lack of culturally sensitive medical care in low-income communities.

“We started it for a cause, not because we wanted to, but because we had to,” said Thomas Silvera. “Our main focus is to bring to underserved communities – especially communities of color – this information at no cost to them.”

Recently, other advocacy groups, including Food Allergy Research & Education, a national advocacy organization, also have started to turn their attention to a lack of access and support in poor and minority communities. When Lisa Gable, who is White, took over at the group known as FARE in 2018, she began to diversify the organization internally and to make it more inclusive.

“There wasn’t a big tent when I walked in the door,” said Ms. Gable. “What we have been focused on doing is trying to find partners and relationships that will allow us to diversify those engaged in the community, because it has not been a diverse community.”

FARE has funded research into the cost of food allergies. It is also expanding its patient registry, which collects data for research, as well as its clinical network of medical institutions to include more diverse communities.

Dr. Gupta is now leading one of the first studies funded by the National Institutes of Health to investigate food allergy in children by race and ethnicity. It looks at all aspects of food allergies, including family life, management, access to care, and genetics.

“That’s a big deal,” said Dr. Gupta. “Because if we really want to improve food allergy management, care and understanding, we really need to understand how it impacts different groups. And that hasn’t been done.”

KHN (Kaiser Health News) is a nonprofit news service covering health issues. It is an editorially independent program of KFF (Kaiser Family Foundation), which is not affiliated with Kaiser Permanente.

As Emily Brown stood in a food pantry looking at her options, she felt alone. Up to that point, she had never struggled financially. But there she was, desperate to find safe food for her young daughter with food allergies. What she found was a jar of salsa and some potatoes.

“That was all that was available,” said Ms. Brown, who lives in Kansas City, Kansas. “It was just a desperate place.”

When she became a parent, Ms. Brown left her job for lack of child care that would accommodate her daughter’s allergies to peanuts, tree nuts, milk, eggs, wheat, and soy. When she and her husband then turned to a federal food assistance program, they found few allowable allergy substitutions. The closest allergy support group she could find was an hour away. She was almost always the only Black parent, and the only poor parent, there.

Ms. Brown called national food allergy advocacy organizations to ask for guidance to help poor families find safe food and medical resources, but she said she was told that wasn’t their focus. Support groups, fundraising activities, and advocacy efforts, plus clinical and research outreach, were targeted at wealthier – and White – families. Advertising rarely reflected families that looked like hers. She felt unseen.

“In many ways, food allergy is an invisible disease. The burden of the disease, the activities and energy it takes to avoid allergens, are mostly invisible to those not impacted,” Ms. Brown said. “Black and other minority patients often lack voice and visibility in the health care system. Add the additional burden of an invisible condition and you are in a really vulnerable position.”

An estimated 6 million children in the United States have food allergies, 40% of them with more than one. Though limited research has been done on race and class breakdowns, recent studies show that poor children and some groups of minority children not only have a higher incidence of food allergies than White children, but their families also have more difficulty accessing appropriate child care, safe food, medical care, and lifesaving medicine like epinephrine for them.

Black children are 7% more likely to have food allergies than white children, according to a 2020 study by Dr. Ruchi Gupta, MD, at Northwestern University, Chicago. To be sure, the study shows that Asian children are 24% more likely than White children to have food allergies. But Black and Hispanic children are disproportionately more likely to live in poor communities, to have asthma, and to suffer from systemic racism in the delivery of medical care.

And finding allergen-free food to keep allergic kids safe can be costly – in both time and money.

“Many times, a mother is frank and says: ‘I have $20-$40 to buy groceries for the week, and if I buy these foods that you are telling me to buy, I will not be able to feed my entire family,’” said Carla Davis, MD, director of the food allergy program at Houston’s Texas Children’s Hospital. “If you are diagnosed with a food allergy and you don’t have disposable income or disposable time, there is really no way that you will be able to alter your diet in a way that your child is going to stay away from their allergen.”

Fed up with the lack of support, Ms. Brown founded the Food Equality Initiative advocacy organization in 2014. It offers an online marketplace to income-eligible families in Kansas and Missouri who, with a doctor’s note about the allergy, can order free allergy-safe food to fit their needs.

Nationwide, though, families’ needs far outstrip what her group can offer – and the problem has gotten worse amid the economic squeeze of the COVID pandemic. Job losses and business closures have exacerbated the barriers to finding and affording nutritious food, according to a report from Feeding America, an association of food banks.

Ms. Brown said her organization more than doubled its clientele in March through August, compared with the same period in 2019. And though it currently serves only Missouri and Kansas, she said the organization has been fielding an increasing number of calls from across the country since the pandemic began.

For low-income minorities, who live disproportionately in food deserts, fresh and allergy-friendly foods can be especially expensive and difficult to find in the best of times.

Food assistance programs are heavily weighted to prepackaged and processed foods, which often include the very ingredients that are problematic. Black children are more likely to be allergic to wheat and soy than White children, and both Black and Hispanic children are more likely to be allergic to corn, shellfish, and fish, according to a 2016 study.

Some programs allow few allergy substitutions. For example, the federal Special Supplemental Nutrition Program for Women, Infants, and Children allows only canned beans as a substitute for peanut butter. While nutritionally similar, beans are not as easy to pack for a kid’s lunch. Ms. Brown questions why WIC won’t allow a seed butter, such as sunflower butter, instead. She said they are nutritionally and functionally similar and are offered as allergy substitutions in other food programs.

Making matters worse, low-income households pay more than twice as much as higher-income families for the emergency medical care their children receive for their allergies, according to a 2016 study by Dr. Gupta. The kids often arrive at the hospital in more distress because they lack safe food and allergy medications – and because asthma, which disproportionately hits Black and Puerto Rican children and low-income communities, complicates allergic reactions.

“So, in these vulnerable populations, it’s like a double whammy, and we see that reflected in the data,” said Lakiea Wright-Bello, MD, a medical director in specialty diagnostics at Thermo Fisher Scientific and an allergist at Brigham and Women’s Hospital in Boston.

Thomas and Dina Silvera, who are Black and Latina, lived this horror firsthand. After their 3-year-old son, Elijah-Alavi, died as a result of a dairy allergy when fed a grilled cheese instead of his allergen-free food at his preschool, they launched the Elijah-Alavi Foundation to address the dearth of information about food allergies and the critical lack of culturally sensitive medical care in low-income communities.

“We started it for a cause, not because we wanted to, but because we had to,” said Thomas Silvera. “Our main focus is to bring to underserved communities – especially communities of color – this information at no cost to them.”

Recently, other advocacy groups, including Food Allergy Research & Education, a national advocacy organization, also have started to turn their attention to a lack of access and support in poor and minority communities. When Lisa Gable, who is White, took over at the group known as FARE in 2018, she began to diversify the organization internally and to make it more inclusive.

“There wasn’t a big tent when I walked in the door,” said Ms. Gable. “What we have been focused on doing is trying to find partners and relationships that will allow us to diversify those engaged in the community, because it has not been a diverse community.”

FARE has funded research into the cost of food allergies. It is also expanding its patient registry, which collects data for research, as well as its clinical network of medical institutions to include more diverse communities.

Dr. Gupta is now leading one of the first studies funded by the National Institutes of Health to investigate food allergy in children by race and ethnicity. It looks at all aspects of food allergies, including family life, management, access to care, and genetics.

“That’s a big deal,” said Dr. Gupta. “Because if we really want to improve food allergy management, care and understanding, we really need to understand how it impacts different groups. And that hasn’t been done.”

KHN (Kaiser Health News) is a nonprofit news service covering health issues. It is an editorially independent program of KFF (Kaiser Family Foundation), which is not affiliated with Kaiser Permanente.

As Emily Brown stood in a food pantry looking at her options, she felt alone. Up to that point, she had never struggled financially. But there she was, desperate to find safe food for her young daughter with food allergies. What she found was a jar of salsa and some potatoes.

“That was all that was available,” said Ms. Brown, who lives in Kansas City, Kansas. “It was just a desperate place.”

When she became a parent, Ms. Brown left her job for lack of child care that would accommodate her daughter’s allergies to peanuts, tree nuts, milk, eggs, wheat, and soy. When she and her husband then turned to a federal food assistance program, they found few allowable allergy substitutions. The closest allergy support group she could find was an hour away. She was almost always the only Black parent, and the only poor parent, there.

Ms. Brown called national food allergy advocacy organizations to ask for guidance to help poor families find safe food and medical resources, but she said she was told that wasn’t their focus. Support groups, fundraising activities, and advocacy efforts, plus clinical and research outreach, were targeted at wealthier – and White – families. Advertising rarely reflected families that looked like hers. She felt unseen.

“In many ways, food allergy is an invisible disease. The burden of the disease, the activities and energy it takes to avoid allergens, are mostly invisible to those not impacted,” Ms. Brown said. “Black and other minority patients often lack voice and visibility in the health care system. Add the additional burden of an invisible condition and you are in a really vulnerable position.”

An estimated 6 million children in the United States have food allergies, 40% of them with more than one. Though limited research has been done on race and class breakdowns, recent studies show that poor children and some groups of minority children not only have a higher incidence of food allergies than White children, but their families also have more difficulty accessing appropriate child care, safe food, medical care, and lifesaving medicine like epinephrine for them.

Black children are 7% more likely to have food allergies than white children, according to a 2020 study by Dr. Ruchi Gupta, MD, at Northwestern University, Chicago. To be sure, the study shows that Asian children are 24% more likely than White children to have food allergies. But Black and Hispanic children are disproportionately more likely to live in poor communities, to have asthma, and to suffer from systemic racism in the delivery of medical care.

And finding allergen-free food to keep allergic kids safe can be costly – in both time and money.

“Many times, a mother is frank and says: ‘I have $20-$40 to buy groceries for the week, and if I buy these foods that you are telling me to buy, I will not be able to feed my entire family,’” said Carla Davis, MD, director of the food allergy program at Houston’s Texas Children’s Hospital. “If you are diagnosed with a food allergy and you don’t have disposable income or disposable time, there is really no way that you will be able to alter your diet in a way that your child is going to stay away from their allergen.”

Fed up with the lack of support, Ms. Brown founded the Food Equality Initiative advocacy organization in 2014. It offers an online marketplace to income-eligible families in Kansas and Missouri who, with a doctor’s note about the allergy, can order free allergy-safe food to fit their needs.

Nationwide, though, families’ needs far outstrip what her group can offer – and the problem has gotten worse amid the economic squeeze of the COVID pandemic. Job losses and business closures have exacerbated the barriers to finding and affording nutritious food, according to a report from Feeding America, an association of food banks.

Ms. Brown said her organization more than doubled its clientele in March through August, compared with the same period in 2019. And though it currently serves only Missouri and Kansas, she said the organization has been fielding an increasing number of calls from across the country since the pandemic began.

For low-income minorities, who live disproportionately in food deserts, fresh and allergy-friendly foods can be especially expensive and difficult to find in the best of times.

Food assistance programs are heavily weighted to prepackaged and processed foods, which often include the very ingredients that are problematic. Black children are more likely to be allergic to wheat and soy than White children, and both Black and Hispanic children are more likely to be allergic to corn, shellfish, and fish, according to a 2016 study.

Some programs allow few allergy substitutions. For example, the federal Special Supplemental Nutrition Program for Women, Infants, and Children allows only canned beans as a substitute for peanut butter. While nutritionally similar, beans are not as easy to pack for a kid’s lunch. Ms. Brown questions why WIC won’t allow a seed butter, such as sunflower butter, instead. She said they are nutritionally and functionally similar and are offered as allergy substitutions in other food programs.

Making matters worse, low-income households pay more than twice as much as higher-income families for the emergency medical care their children receive for their allergies, according to a 2016 study by Dr. Gupta. The kids often arrive at the hospital in more distress because they lack safe food and allergy medications – and because asthma, which disproportionately hits Black and Puerto Rican children and low-income communities, complicates allergic reactions.

“So, in these vulnerable populations, it’s like a double whammy, and we see that reflected in the data,” said Lakiea Wright-Bello, MD, a medical director in specialty diagnostics at Thermo Fisher Scientific and an allergist at Brigham and Women’s Hospital in Boston.

Thomas and Dina Silvera, who are Black and Latina, lived this horror firsthand. After their 3-year-old son, Elijah-Alavi, died as a result of a dairy allergy when fed a grilled cheese instead of his allergen-free food at his preschool, they launched the Elijah-Alavi Foundation to address the dearth of information about food allergies and the critical lack of culturally sensitive medical care in low-income communities.

“We started it for a cause, not because we wanted to, but because we had to,” said Thomas Silvera. “Our main focus is to bring to underserved communities – especially communities of color – this information at no cost to them.”

Recently, other advocacy groups, including Food Allergy Research & Education, a national advocacy organization, also have started to turn their attention to a lack of access and support in poor and minority communities. When Lisa Gable, who is White, took over at the group known as FARE in 2018, she began to diversify the organization internally and to make it more inclusive.

“There wasn’t a big tent when I walked in the door,” said Ms. Gable. “What we have been focused on doing is trying to find partners and relationships that will allow us to diversify those engaged in the community, because it has not been a diverse community.”

FARE has funded research into the cost of food allergies. It is also expanding its patient registry, which collects data for research, as well as its clinical network of medical institutions to include more diverse communities.

Dr. Gupta is now leading one of the first studies funded by the National Institutes of Health to investigate food allergy in children by race and ethnicity. It looks at all aspects of food allergies, including family life, management, access to care, and genetics.

“That’s a big deal,” said Dr. Gupta. “Because if we really want to improve food allergy management, care and understanding, we really need to understand how it impacts different groups. And that hasn’t been done.”

KHN (Kaiser Health News) is a nonprofit news service covering health issues. It is an editorially independent program of KFF (Kaiser Family Foundation), which is not affiliated with Kaiser Permanente.

On April 4, 2021, a rule implementing the federal regulations of the Information Blocking 21st Century Cures Act will be enacted. This Act furthers the seamless release of medical records to promote improved outcomes, access to medical information, and transparency of costs. These regulations, although important, may impact the ability to offer confidentiality to adolescents seeking care for sensitive issues. Each state will need to be thoughtful balancing the action or inaction of allowing access to confidential or sensitive progress notes, as interference with access may be considered information blocking and subject to penalties and fines.

belchonock/Thinkstock

With adolescent confidential notes, protection rules may not apply under the information blocking regulations. These regulations will release progress notes, imaging narratives, procedure notes, and labs to parents via their EHR portals. The release of information is not limited, and both inpatient and outpatient records will be released. These regulations are written for adults with the assumption that all information is released to the individual receiving the care and shared with outside providers.

Ms. Thew is medical director of the department of adolescent medicine at Children’s Wisconsin in Milwaukee. She is a member of the Pediatric News editorial advisory board. She had no relevant financial disclosures. Email Ms. Thew at pdnews@mdedge.com.

On April 4, 2021, a rule implementing the federal regulations of the Information Blocking 21st Century Cures Act will be enacted. This Act furthers the seamless release of medical records to promote improved outcomes, access to medical information, and transparency of costs. These regulations, although important, may impact the ability to offer confidentiality to adolescents seeking care for sensitive issues. Each state will need to be thoughtful balancing the action or inaction of allowing access to confidential or sensitive progress notes, as interference with access may be considered information blocking and subject to penalties and fines.

belchonock/Thinkstock

With adolescent confidential notes, protection rules may not apply under the information blocking regulations. These regulations will release progress notes, imaging narratives, procedure notes, and labs to parents via their EHR portals. The release of information is not limited, and both inpatient and outpatient records will be released. These regulations are written for adults with the assumption that all information is released to the individual receiving the care and shared with outside providers.

Ms. Thew is medical director of the department of adolescent medicine at Children’s Wisconsin in Milwaukee. She is a member of the Pediatric News editorial advisory board. She had no relevant financial disclosures. Email Ms. Thew at pdnews@mdedge.com.

On April 4, 2021, a rule implementing the federal regulations of the Information Blocking 21st Century Cures Act will be enacted. This Act furthers the seamless release of medical records to promote improved outcomes, access to medical information, and transparency of costs. These regulations, although important, may impact the ability to offer confidentiality to adolescents seeking care for sensitive issues. Each state will need to be thoughtful balancing the action or inaction of allowing access to confidential or sensitive progress notes, as interference with access may be considered information blocking and subject to penalties and fines.

belchonock/Thinkstock

With adolescent confidential notes, protection rules may not apply under the information blocking regulations. These regulations will release progress notes, imaging narratives, procedure notes, and labs to parents via their EHR portals. The release of information is not limited, and both inpatient and outpatient records will be released. These regulations are written for adults with the assumption that all information is released to the individual receiving the care and shared with outside providers.

Ms. Thew is medical director of the department of adolescent medicine at Children’s Wisconsin in Milwaukee. She is a member of the Pediatric News editorial advisory board. She had no relevant financial disclosures. Email Ms. Thew at pdnews@mdedge.com.

Performing dermatologic procedures in infants, children, and teenagers presents many unique challenges. There may be unique diagnoses, different instruments, differences in skin biology, or different approaches to pain management and anesthesia; the inclusion of a third party (caregivers) in decision processes; or a need to assess maturity level or to optimize outcomes over the patient’s lifetime. The field of pediatric procedural dermatology is broad. This article reviews some of the more common procedures performed by pediatric dermatologists and some of the more common ethical and quality-of-life (QOL) considerations one might face in procedural pediatric dermatology. (The textbook Procedural Pediatric Dermatology¹ offers a thorough discussion of this topic.)

Quality of Life

More often than not, procedures are performed in pediatric dermatology to improve QOL rather than to prevent morbidity or mortality. In the case of many self-limited conditions, such as ingrown nails or pyogenic granulomas, it is clear that intervention will improve the patient’s QOL. In the case of warts and molluscum contagiosum, emotional, social, and cultural considerations play a large role in determining whether an intervention will improve QOL. Finally, some conditions, such as genodermatoses, giant congenital melanocytic nevi, and large vascular malformations, may be associated with additional systemic symptoms and may not have good treatment options for cure. In these cases, procedural interventions will result in a mixture of positive and negative QOL outcomes that can occur at the same time.

Bemmels et al² published a qualitative study that provides a good foundation for understanding the positive and negative effects of procedural interventions on children and teenagers. In their study, children and teenagers who underwent reconstructive surgery for craniofacial differences noted improved self-esteem and reduced stigmatization. However, they also experienced negative outcomes, including an addiction to attaining a perfect surgical face, missing school for treatments, difficulty adjusting to an evolving appearance, anxiety related to not knowing when treatments will end, and experiencing stigma related to undergoing surgery.² Thus, a comprehensive plan for the management of children who need ongoing procedures should include some level of psychosocial support. Two good references on supporting young patients with visible differences include CBT for Appearance Anxiety: Psychosocial Interventions for Anxiety Due to Visible Difference³ and Reaching Teens: Strength-Based, Trauma-Sensitive, Resilience-Building Communication Strategies Rooted in Positive Youth Development.⁴

Ethics

Ethical decisions in pediatric procedural dermatology differ from adult dermatology in 3 major ways: (1) the involvement of a third party (ie, parents or legal guardians), (2) the need to assess the maturity of the patient, and (3) the need to know local laws in the jurisdiction in which care is being provided. Ethical dilemmas occur when the desires of the child, parents/guardians, and dermatologist are not in alignment. In these cases, it is important to be prepared with a moral or ethical framework to guide decision-making when conflicts occur. Two great resources are the best interest standard⁵ and the publication entitled, “Informed Consent in Decision-making in Pediatric Practice,” from the American Academy of Pediatrics.⁶

In pediatrics, it often is better to conceptualize medical decision-making as a combination of informed permission and assent of the patient rather than informed consent. Informed permission describes how a parent or surrogate makes decisions for the child or adolescent and is similar to informed consent. A parent’s informed permission may be in conflict with a child’s wishes, but it is assumed that the parent is acting in the best interest of the child. Assent of the patient is the process of obtaining a minor’s agreement to undergo an intervention even though he/she may lack legal authority or decision-making capacity to provide standard informed consent. It is important to respect the child’s right to assent to interventions to the extent that their maturity level permits to develop trust with the dermatologist and medical encounters in general.

These differences emphasize an active process in which the patient, caregiver, and physician are all involved in the health care process and allow for increasing inclusion of the child as is developmentally appropriate. In the end, however, parents have the legal authority to give or withhold permission for a procedure.⁷ When this conflicts with a child’s dissent, the dermatologist will need to objectively explore the reasons for the conflict and decide if a procedure is not in the child’s best interests. If a mutual understanding cannot be reached between the dermatologist and parents, obtaining a second opinion is a good option.⁸

Common Diagnoses

The most common diagnoses unique to procedural pediatric dermatology include congenital melanocytic nevi, vascular anomalies, midline lesions, epidermal nevi, and pilomatricomas. Prior to intervening on these lesions, it is important to consider evaluating for associated diseases.

Congenital Melanocytic Nevi
Nevus Outreach has published best practices for the management of congenital melanocytic nevi.⁹ In newborns with a congenital melanocytic nevus greater than 3 cm in diameter or more than 20 satellite lesions, it is recommended that magnetic resonance imaging (MRI) of the brain and spine with and without gadolinium contrast be obtained before 6 months of age. Within the first 6 months of life, these children also should see ophthalmologists, neurologists, pediatric dermatologists, and plastic surgeons. These early referrals will help to establish a baseline for the patient and plan for possible interventions, if needed. Additionally, before 3 years of age, every child should be referred to psychology, even if he/she is asymptomatic.¹⁰

Vascular Anomalies
Prior to intervening on a vascular anomaly, it is important to accurately classify the lesion. Once the lesion is classified, an evaluation and treatment plan can be developed. The International Society for the Study of Vascular Anomalies has published a detailed classification guide that is a useful starting point in the management of vascular anomalies.¹¹ Once a diagnosis is confirmed, further evaluation may include imaging, specialty referrals, genetic testing, biopsy, or blood tests, and a pediatric dermatologist usually helps to coordinate the care of patients with complex vascular anomalies.

Midline Lesions
Certain lesions in the midline may have a higher risk for neural tube dysraphism, and imaging should be performed prior to any procedural intervention.¹² Midline cutaneous findings that are highly likely to be associated with dysraphism are lipomas, acrochordons, pseudotails, true tails, aplasia cutis congenita, congenital scars, dermoid cysts, dermoid sinuses, and infantile hemangiomas that are greater than 2.5 cm in diameter. An MRI should be performed for all high-risk lesions. Intermediate-risk lesions are atypical dimples (>5 mm in diameter or >2.5 cm from the anal verge), hemangiomas less than 2.5 cm in diameter, and hypertrichosis. An ultrasound can screen for spinal dysraphism in these cases as long as imaging is performed prior to 6 months of age. If the child is older than 6 months, an MRI should be performed. Low-risk lesions that do not require imaging are simple dimples, hyperpigmentation, hypopigmentation, melanocytic nevi, port-wine stains, and telangiectases.

Epidermal Nevi
Children with epidermal nevi should have a complete physical examination, focusing on the skeletal system, central nervous system, and eyes. There are no specifically recommended imaging studies or referrals; however, several diagnostic clues can aid in the diagnosis of an epidermal nevus syndrome¹³:

• Schimmelpenning syndrome: extensive nevus sebaceous and bowing or pain in the legs after 2 years of age

• Phacomatosis pigmentokeratotica: nevus sebaceous and nevus spilus

• Nevus comedonicus syndrome: ipsilateral cataract

• Angora hair nevus syndrome: soft white hair within the nevus

• Becker nevus syndrome: breast hypoplasia

• Proteus syndrome: cerebriform plantar changes

• PIK3CA-related overgrowth spectrum: lipomas, macrodactyly, and/or vascular malformations

• Congenital hemidysplasia with ichthyosiform erythroderma and limb defects: inflammatory epidermal nevi, lateralization, ptychotropism, and ipsilateral limb defects

• Conradi-Hünermann-Happle syndrome: scaly red epidermal nevi without hair follicles and asymmetric limb shortening

Pilomatricomas
In addition to the tent sign—an angulated shape can be appreciated by stretching the skin overlying pilomatricomas—diagnosis of pilomatricoma can be confirmed by transillumination with an otoscope. In this case, a dark shadow typically is cast distal to where the otoscope touches the skin.¹⁴ In the case of multiple lesions, the patient should be evaluated for signs of myotonic dystrophy, Turner syndrome, and Gardner syndrome.¹⁵

Common Procedures

Pulsed Dye Laser
The pulsed dye laser is the most common laser used for red-colored lesions such as port-wine stains, facial telangiectases, and superficial hemangiomas. It also can be used to treat erythematous scars, verrucae, and psoriasis. In large vascular lesions, it typically is employed at 0.45 to 10 milliseconds every 4 to 6 weeks for 10 or more treatments. Port-wine stains preferably are treated within the first few months of life to provide the most fading without the need for general anesthesia.¹⁶ On the other hand, systemic therapy with propranolol is preferred over lasers for infantile hemangiomas.¹⁷

Long-Pulsed Alexandrite Laser (755 nm)
The alexandrite laser often is used to treat deeper vascular lesions such as venous lakes and hypertrophic port-wine stains. The operator needs to be cautious, as this laser has a higher incidence of scarring at the settings used to treat vascular lesions (typically fluences around 60–85 J/cm²).¹⁸ It also may be used for hair reduction in disorders with hypertrichosis or hidradenitis suppurativa.¹⁹

Long-Pulsed Nd:YAG Laser
The long-pulsed Nd:YAG laser also can be used to treat deep vascular lesions and remove unwanted hair. Because of its low window of safety in the treatment of vascular lesions, the alexandrite laser usually is preferred. However, it is the preferred laser for treatment of unwanted hair and hidradenitis suppurativa in darker skin types. It often provides a 50% reduction in hair density after 9 treatments.²⁰

Quality-Switched Lasers
Pigment granules in melanosomes and tattoo particles are targeted with quality-switched (QS) lasers. Typically, a device will contain a combination of QS 532-nm potassium-titanyl-phosphate (KTP) lasers, QS 1064-nm Nd:YAG lasers, and QS 755-nm alexandrite lasers in 1 machine. In general, shorter wavelengths are used to treat epidermal lesions such as ephelides, lentigines, and café-au-lait macules. Longer wavelengths are used to treat deeper lesions such as nevus of Ota. A 2017 review suggested that café-au-lait macules with ragged borders (so-called coast of Maine borders) may respond well to QS lasers.²¹

Ablative Lasers
The 10,600-nm CO₂ laser and 2940-nm erbium:YAG laser can be used to debulk superficial tumors such as lymphangiomas, syringomas, angiofibromas, and xanthomas.²² These treatments have a higher risk for scarring than other lasers, so it is important to have a good understanding of desired clinical end points before using these devices.

Fractionated Lasers
Fractionated lasers can be nonablative (several devices are available in the 1410- to 1927-nm range) or ablative (CO₂ or erbium:YAG). In pediatrics, they are usually used to treat burn scars, traumatic scars, and mild to moderate acne scarring.²² The most common side effects from fractionated lasers are prolonged erythema or hyperpigmentation. In addition, it typically takes at least 3 treatments to notice improvements.

Excisions

Pediatric procedural dermatologists remove a variety of unique lesions through excision. A few tips are provided for some of the more common lesions that may be excised in children.

Accessory Tragi
Prior to excising an accessory tragus, the surgeon should consider documenting a facial nerve examination, as accessory tragi can be associated with complete or partial facial nerve dysfunction. Additionally, there usually is an underlying cartilage structure present within the tragus. The cartilage stalk also should be addressed during the excision to avoid a continued palpable deformity after excision.

Dermoid Cysts
Dermoid cysts are the most commonly diagnosed benign orbital lesion in children.²³ Exophytic periorbital lesions, which extend outside the orbital rim, can be removed through an infrabrow incision. Endophytic periorbital lesions, which are inside the orbital rim, should be removed through a crease incision. Midline lesions may have an intracranial extension and should be imaged through MRI and/or a computed tomography.²⁴ Because dermoid cysts usually are located below the orbicularis oculi muscle, the muscle should be fixed with a suture prior to closing with skin sutures.

Pilomatricomas
Typically, a linear incision is made overlying the lesion, and then the underlying tumor is removed with sharp or blunt dissection. However, if the overlying skin has been stretched thin, a lenticular excision that includes the thinned skin may improve cosmesis.

Congenital Nevi
Large congenital nevi typically are removed through staged excisions. Lower extremity lesions are best removed before 10 months of age or before walking begins to minimize wound tension. However, if the procedure is not performed in infancy, it is best to wait until walking becomes stable.²⁵ In older children, it is advisable to splint the affected lower extremity for 2 weeks to prevent dehiscence. The interval between excisions typically is 4 to 6 weeks for small lesions and 3 months for larger nevi.

Conclusion

Procedural pediatric dermatology is a broad and emerging field. As this article highlights, children are not small versions of adults and have unique biology, diseases, therapies, social situations, and ethical challenges from adults. This article provides a superficial overview of some of the more common issues faced by pediatric dermatologists and providers who perform procedures on infants, children, and teenagers. Readers who are interested in obtaining a more in-depth understanding of procedural pediatric dermatology should look at Procedural Pediatric Dermatology,¹ the first textbook to provide expert opinion and evidence-based information on procedural management of pediatric skin conditions.

Performing dermatologic procedures in infants, children, and teenagers presents many unique challenges. There may be unique diagnoses, different instruments, differences in skin biology, or different approaches to pain management and anesthesia; the inclusion of a third party (caregivers) in decision processes; or a need to assess maturity level or to optimize outcomes over the patient’s lifetime. The field of pediatric procedural dermatology is broad. This article reviews some of the more common procedures performed by pediatric dermatologists and some of the more common ethical and quality-of-life (QOL) considerations one might face in procedural pediatric dermatology. (The textbook Procedural Pediatric Dermatology¹ offers a thorough discussion of this topic.)

Quality of Life

More often than not, procedures are performed in pediatric dermatology to improve QOL rather than to prevent morbidity or mortality. In the case of many self-limited conditions, such as ingrown nails or pyogenic granulomas, it is clear that intervention will improve the patient’s QOL. In the case of warts and molluscum contagiosum, emotional, social, and cultural considerations play a large role in determining whether an intervention will improve QOL. Finally, some conditions, such as genodermatoses, giant congenital melanocytic nevi, and large vascular malformations, may be associated with additional systemic symptoms and may not have good treatment options for cure. In these cases, procedural interventions will result in a mixture of positive and negative QOL outcomes that can occur at the same time.

Bemmels et al² published a qualitative study that provides a good foundation for understanding the positive and negative effects of procedural interventions on children and teenagers. In their study, children and teenagers who underwent reconstructive surgery for craniofacial differences noted improved self-esteem and reduced stigmatization. However, they also experienced negative outcomes, including an addiction to attaining a perfect surgical face, missing school for treatments, difficulty adjusting to an evolving appearance, anxiety related to not knowing when treatments will end, and experiencing stigma related to undergoing surgery.² Thus, a comprehensive plan for the management of children who need ongoing procedures should include some level of psychosocial support. Two good references on supporting young patients with visible differences include CBT for Appearance Anxiety: Psychosocial Interventions for Anxiety Due to Visible Difference³ and Reaching Teens: Strength-Based, Trauma-Sensitive, Resilience-Building Communication Strategies Rooted in Positive Youth Development.⁴

Ethics

Ethical decisions in pediatric procedural dermatology differ from adult dermatology in 3 major ways: (1) the involvement of a third party (ie, parents or legal guardians), (2) the need to assess the maturity of the patient, and (3) the need to know local laws in the jurisdiction in which care is being provided. Ethical dilemmas occur when the desires of the child, parents/guardians, and dermatologist are not in alignment. In these cases, it is important to be prepared with a moral or ethical framework to guide decision-making when conflicts occur. Two great resources are the best interest standard⁵ and the publication entitled, “Informed Consent in Decision-making in Pediatric Practice,” from the American Academy of Pediatrics.⁶

In pediatrics, it often is better to conceptualize medical decision-making as a combination of informed permission and assent of the patient rather than informed consent. Informed permission describes how a parent or surrogate makes decisions for the child or adolescent and is similar to informed consent. A parent’s informed permission may be in conflict with a child’s wishes, but it is assumed that the parent is acting in the best interest of the child. Assent of the patient is the process of obtaining a minor’s agreement to undergo an intervention even though he/she may lack legal authority or decision-making capacity to provide standard informed consent. It is important to respect the child’s right to assent to interventions to the extent that their maturity level permits to develop trust with the dermatologist and medical encounters in general.

These differences emphasize an active process in which the patient, caregiver, and physician are all involved in the health care process and allow for increasing inclusion of the child as is developmentally appropriate. In the end, however, parents have the legal authority to give or withhold permission for a procedure.⁷ When this conflicts with a child’s dissent, the dermatologist will need to objectively explore the reasons for the conflict and decide if a procedure is not in the child’s best interests. If a mutual understanding cannot be reached between the dermatologist and parents, obtaining a second opinion is a good option.⁸

Common Diagnoses

The most common diagnoses unique to procedural pediatric dermatology include congenital melanocytic nevi, vascular anomalies, midline lesions, epidermal nevi, and pilomatricomas. Prior to intervening on these lesions, it is important to consider evaluating for associated diseases.

Congenital Melanocytic Nevi
Nevus Outreach has published best practices for the management of congenital melanocytic nevi.⁹ In newborns with a congenital melanocytic nevus greater than 3 cm in diameter or more than 20 satellite lesions, it is recommended that magnetic resonance imaging (MRI) of the brain and spine with and without gadolinium contrast be obtained before 6 months of age. Within the first 6 months of life, these children also should see ophthalmologists, neurologists, pediatric dermatologists, and plastic surgeons. These early referrals will help to establish a baseline for the patient and plan for possible interventions, if needed. Additionally, before 3 years of age, every child should be referred to psychology, even if he/she is asymptomatic.¹⁰

Vascular Anomalies
Prior to intervening on a vascular anomaly, it is important to accurately classify the lesion. Once the lesion is classified, an evaluation and treatment plan can be developed. The International Society for the Study of Vascular Anomalies has published a detailed classification guide that is a useful starting point in the management of vascular anomalies.¹¹ Once a diagnosis is confirmed, further evaluation may include imaging, specialty referrals, genetic testing, biopsy, or blood tests, and a pediatric dermatologist usually helps to coordinate the care of patients with complex vascular anomalies.

Midline Lesions
Certain lesions in the midline may have a higher risk for neural tube dysraphism, and imaging should be performed prior to any procedural intervention.¹² Midline cutaneous findings that are highly likely to be associated with dysraphism are lipomas, acrochordons, pseudotails, true tails, aplasia cutis congenita, congenital scars, dermoid cysts, dermoid sinuses, and infantile hemangiomas that are greater than 2.5 cm in diameter. An MRI should be performed for all high-risk lesions. Intermediate-risk lesions are atypical dimples (>5 mm in diameter or >2.5 cm from the anal verge), hemangiomas less than 2.5 cm in diameter, and hypertrichosis. An ultrasound can screen for spinal dysraphism in these cases as long as imaging is performed prior to 6 months of age. If the child is older than 6 months, an MRI should be performed. Low-risk lesions that do not require imaging are simple dimples, hyperpigmentation, hypopigmentation, melanocytic nevi, port-wine stains, and telangiectases.

Epidermal Nevi
Children with epidermal nevi should have a complete physical examination, focusing on the skeletal system, central nervous system, and eyes. There are no specifically recommended imaging studies or referrals; however, several diagnostic clues can aid in the diagnosis of an epidermal nevus syndrome¹³:

• Schimmelpenning syndrome: extensive nevus sebaceous and bowing or pain in the legs after 2 years of age

• Phacomatosis pigmentokeratotica: nevus sebaceous and nevus spilus

• Nevus comedonicus syndrome: ipsilateral cataract

• Angora hair nevus syndrome: soft white hair within the nevus

• Becker nevus syndrome: breast hypoplasia

• Proteus syndrome: cerebriform plantar changes

• PIK3CA-related overgrowth spectrum: lipomas, macrodactyly, and/or vascular malformations

• Congenital hemidysplasia with ichthyosiform erythroderma and limb defects: inflammatory epidermal nevi, lateralization, ptychotropism, and ipsilateral limb defects

• Conradi-Hünermann-Happle syndrome: scaly red epidermal nevi without hair follicles and asymmetric limb shortening

Pilomatricomas
In addition to the tent sign—an angulated shape can be appreciated by stretching the skin overlying pilomatricomas—diagnosis of pilomatricoma can be confirmed by transillumination with an otoscope. In this case, a dark shadow typically is cast distal to where the otoscope touches the skin.¹⁴ In the case of multiple lesions, the patient should be evaluated for signs of myotonic dystrophy, Turner syndrome, and Gardner syndrome.¹⁵

Common Procedures

Pulsed Dye Laser
The pulsed dye laser is the most common laser used for red-colored lesions such as port-wine stains, facial telangiectases, and superficial hemangiomas. It also can be used to treat erythematous scars, verrucae, and psoriasis. In large vascular lesions, it typically is employed at 0.45 to 10 milliseconds every 4 to 6 weeks for 10 or more treatments. Port-wine stains preferably are treated within the first few months of life to provide the most fading without the need for general anesthesia.¹⁶ On the other hand, systemic therapy with propranolol is preferred over lasers for infantile hemangiomas.¹⁷

Long-Pulsed Alexandrite Laser (755 nm)
The alexandrite laser often is used to treat deeper vascular lesions such as venous lakes and hypertrophic port-wine stains. The operator needs to be cautious, as this laser has a higher incidence of scarring at the settings used to treat vascular lesions (typically fluences around 60–85 J/cm²).¹⁸ It also may be used for hair reduction in disorders with hypertrichosis or hidradenitis suppurativa.¹⁹

Long-Pulsed Nd:YAG Laser
The long-pulsed Nd:YAG laser also can be used to treat deep vascular lesions and remove unwanted hair. Because of its low window of safety in the treatment of vascular lesions, the alexandrite laser usually is preferred. However, it is the preferred laser for treatment of unwanted hair and hidradenitis suppurativa in darker skin types. It often provides a 50% reduction in hair density after 9 treatments.²⁰

Quality-Switched Lasers
Pigment granules in melanosomes and tattoo particles are targeted with quality-switched (QS) lasers. Typically, a device will contain a combination of QS 532-nm potassium-titanyl-phosphate (KTP) lasers, QS 1064-nm Nd:YAG lasers, and QS 755-nm alexandrite lasers in 1 machine. In general, shorter wavelengths are used to treat epidermal lesions such as ephelides, lentigines, and café-au-lait macules. Longer wavelengths are used to treat deeper lesions such as nevus of Ota. A 2017 review suggested that café-au-lait macules with ragged borders (so-called coast of Maine borders) may respond well to QS lasers.²¹

Ablative Lasers
The 10,600-nm CO₂ laser and 2940-nm erbium:YAG laser can be used to debulk superficial tumors such as lymphangiomas, syringomas, angiofibromas, and xanthomas.²² These treatments have a higher risk for scarring than other lasers, so it is important to have a good understanding of desired clinical end points before using these devices.

Fractionated Lasers
Fractionated lasers can be nonablative (several devices are available in the 1410- to 1927-nm range) or ablative (CO₂ or erbium:YAG). In pediatrics, they are usually used to treat burn scars, traumatic scars, and mild to moderate acne scarring.²² The most common side effects from fractionated lasers are prolonged erythema or hyperpigmentation. In addition, it typically takes at least 3 treatments to notice improvements.

Excisions

Pediatric procedural dermatologists remove a variety of unique lesions through excision. A few tips are provided for some of the more common lesions that may be excised in children.

Accessory Tragi
Prior to excising an accessory tragus, the surgeon should consider documenting a facial nerve examination, as accessory tragi can be associated with complete or partial facial nerve dysfunction. Additionally, there usually is an underlying cartilage structure present within the tragus. The cartilage stalk also should be addressed during the excision to avoid a continued palpable deformity after excision.

Dermoid Cysts
Dermoid cysts are the most commonly diagnosed benign orbital lesion in children.²³ Exophytic periorbital lesions, which extend outside the orbital rim, can be removed through an infrabrow incision. Endophytic periorbital lesions, which are inside the orbital rim, should be removed through a crease incision. Midline lesions may have an intracranial extension and should be imaged through MRI and/or a computed tomography.²⁴ Because dermoid cysts usually are located below the orbicularis oculi muscle, the muscle should be fixed with a suture prior to closing with skin sutures.

Pilomatricomas
Typically, a linear incision is made overlying the lesion, and then the underlying tumor is removed with sharp or blunt dissection. However, if the overlying skin has been stretched thin, a lenticular excision that includes the thinned skin may improve cosmesis.

Congenital Nevi
Large congenital nevi typically are removed through staged excisions. Lower extremity lesions are best removed before 10 months of age or before walking begins to minimize wound tension. However, if the procedure is not performed in infancy, it is best to wait until walking becomes stable.²⁵ In older children, it is advisable to splint the affected lower extremity for 2 weeks to prevent dehiscence. The interval between excisions typically is 4 to 6 weeks for small lesions and 3 months for larger nevi.

Conclusion

Procedural pediatric dermatology is a broad and emerging field. As this article highlights, children are not small versions of adults and have unique biology, diseases, therapies, social situations, and ethical challenges from adults. This article provides a superficial overview of some of the more common issues faced by pediatric dermatologists and providers who perform procedures on infants, children, and teenagers. Readers who are interested in obtaining a more in-depth understanding of procedural pediatric dermatology should look at Procedural Pediatric Dermatology,¹ the first textbook to provide expert opinion and evidence-based information on procedural management of pediatric skin conditions.

Performing dermatologic procedures in infants, children, and teenagers presents many unique challenges. There may be unique diagnoses, different instruments, differences in skin biology, or different approaches to pain management and anesthesia; the inclusion of a third party (caregivers) in decision processes; or a need to assess maturity level or to optimize outcomes over the patient’s lifetime. The field of pediatric procedural dermatology is broad. This article reviews some of the more common procedures performed by pediatric dermatologists and some of the more common ethical and quality-of-life (QOL) considerations one might face in procedural pediatric dermatology. (The textbook Procedural Pediatric Dermatology¹ offers a thorough discussion of this topic.)

Quality of Life

More often than not, procedures are performed in pediatric dermatology to improve QOL rather than to prevent morbidity or mortality. In the case of many self-limited conditions, such as ingrown nails or pyogenic granulomas, it is clear that intervention will improve the patient’s QOL. In the case of warts and molluscum contagiosum, emotional, social, and cultural considerations play a large role in determining whether an intervention will improve QOL. Finally, some conditions, such as genodermatoses, giant congenital melanocytic nevi, and large vascular malformations, may be associated with additional systemic symptoms and may not have good treatment options for cure. In these cases, procedural interventions will result in a mixture of positive and negative QOL outcomes that can occur at the same time.

Bemmels et al² published a qualitative study that provides a good foundation for understanding the positive and negative effects of procedural interventions on children and teenagers. In their study, children and teenagers who underwent reconstructive surgery for craniofacial differences noted improved self-esteem and reduced stigmatization. However, they also experienced negative outcomes, including an addiction to attaining a perfect surgical face, missing school for treatments, difficulty adjusting to an evolving appearance, anxiety related to not knowing when treatments will end, and experiencing stigma related to undergoing surgery.² Thus, a comprehensive plan for the management of children who need ongoing procedures should include some level of psychosocial support. Two good references on supporting young patients with visible differences include CBT for Appearance Anxiety: Psychosocial Interventions for Anxiety Due to Visible Difference³ and Reaching Teens: Strength-Based, Trauma-Sensitive, Resilience-Building Communication Strategies Rooted in Positive Youth Development.⁴

Ethics

Ethical decisions in pediatric procedural dermatology differ from adult dermatology in 3 major ways: (1) the involvement of a third party (ie, parents or legal guardians), (2) the need to assess the maturity of the patient, and (3) the need to know local laws in the jurisdiction in which care is being provided. Ethical dilemmas occur when the desires of the child, parents/guardians, and dermatologist are not in alignment. In these cases, it is important to be prepared with a moral or ethical framework to guide decision-making when conflicts occur. Two great resources are the best interest standard⁵ and the publication entitled, “Informed Consent in Decision-making in Pediatric Practice,” from the American Academy of Pediatrics.⁶

In pediatrics, it often is better to conceptualize medical decision-making as a combination of informed permission and assent of the patient rather than informed consent. Informed permission describes how a parent or surrogate makes decisions for the child or adolescent and is similar to informed consent. A parent’s informed permission may be in conflict with a child’s wishes, but it is assumed that the parent is acting in the best interest of the child. Assent of the patient is the process of obtaining a minor’s agreement to undergo an intervention even though he/she may lack legal authority or decision-making capacity to provide standard informed consent. It is important to respect the child’s right to assent to interventions to the extent that their maturity level permits to develop trust with the dermatologist and medical encounters in general.

These differences emphasize an active process in which the patient, caregiver, and physician are all involved in the health care process and allow for increasing inclusion of the child as is developmentally appropriate. In the end, however, parents have the legal authority to give or withhold permission for a procedure.⁷ When this conflicts with a child’s dissent, the dermatologist will need to objectively explore the reasons for the conflict and decide if a procedure is not in the child’s best interests. If a mutual understanding cannot be reached between the dermatologist and parents, obtaining a second opinion is a good option.⁸

Common Diagnoses

The most common diagnoses unique to procedural pediatric dermatology include congenital melanocytic nevi, vascular anomalies, midline lesions, epidermal nevi, and pilomatricomas. Prior to intervening on these lesions, it is important to consider evaluating for associated diseases.

Congenital Melanocytic Nevi
Nevus Outreach has published best practices for the management of congenital melanocytic nevi.⁹ In newborns with a congenital melanocytic nevus greater than 3 cm in diameter or more than 20 satellite lesions, it is recommended that magnetic resonance imaging (MRI) of the brain and spine with and without gadolinium contrast be obtained before 6 months of age. Within the first 6 months of life, these children also should see ophthalmologists, neurologists, pediatric dermatologists, and plastic surgeons. These early referrals will help to establish a baseline for the patient and plan for possible interventions, if needed. Additionally, before 3 years of age, every child should be referred to psychology, even if he/she is asymptomatic.¹⁰

Vascular Anomalies
Prior to intervening on a vascular anomaly, it is important to accurately classify the lesion. Once the lesion is classified, an evaluation and treatment plan can be developed. The International Society for the Study of Vascular Anomalies has published a detailed classification guide that is a useful starting point in the management of vascular anomalies.¹¹ Once a diagnosis is confirmed, further evaluation may include imaging, specialty referrals, genetic testing, biopsy, or blood tests, and a pediatric dermatologist usually helps to coordinate the care of patients with complex vascular anomalies.

Midline Lesions
Certain lesions in the midline may have a higher risk for neural tube dysraphism, and imaging should be performed prior to any procedural intervention.¹² Midline cutaneous findings that are highly likely to be associated with dysraphism are lipomas, acrochordons, pseudotails, true tails, aplasia cutis congenita, congenital scars, dermoid cysts, dermoid sinuses, and infantile hemangiomas that are greater than 2.5 cm in diameter. An MRI should be performed for all high-risk lesions. Intermediate-risk lesions are atypical dimples (>5 mm in diameter or >2.5 cm from the anal verge), hemangiomas less than 2.5 cm in diameter, and hypertrichosis. An ultrasound can screen for spinal dysraphism in these cases as long as imaging is performed prior to 6 months of age. If the child is older than 6 months, an MRI should be performed. Low-risk lesions that do not require imaging are simple dimples, hyperpigmentation, hypopigmentation, melanocytic nevi, port-wine stains, and telangiectases.

Epidermal Nevi
Children with epidermal nevi should have a complete physical examination, focusing on the skeletal system, central nervous system, and eyes. There are no specifically recommended imaging studies or referrals; however, several diagnostic clues can aid in the diagnosis of an epidermal nevus syndrome¹³:

• Schimmelpenning syndrome: extensive nevus sebaceous and bowing or pain in the legs after 2 years of age

• Phacomatosis pigmentokeratotica: nevus sebaceous and nevus spilus

• Nevus comedonicus syndrome: ipsilateral cataract

• Angora hair nevus syndrome: soft white hair within the nevus

• Becker nevus syndrome: breast hypoplasia

• Proteus syndrome: cerebriform plantar changes

• PIK3CA-related overgrowth spectrum: lipomas, macrodactyly, and/or vascular malformations

• Congenital hemidysplasia with ichthyosiform erythroderma and limb defects: inflammatory epidermal nevi, lateralization, ptychotropism, and ipsilateral limb defects

• Conradi-Hünermann-Happle syndrome: scaly red epidermal nevi without hair follicles and asymmetric limb shortening

Pilomatricomas
In addition to the tent sign—an angulated shape can be appreciated by stretching the skin overlying pilomatricomas—diagnosis of pilomatricoma can be confirmed by transillumination with an otoscope. In this case, a dark shadow typically is cast distal to where the otoscope touches the skin.¹⁴ In the case of multiple lesions, the patient should be evaluated for signs of myotonic dystrophy, Turner syndrome, and Gardner syndrome.¹⁵

Common Procedures

Pulsed Dye Laser
The pulsed dye laser is the most common laser used for red-colored lesions such as port-wine stains, facial telangiectases, and superficial hemangiomas. It also can be used to treat erythematous scars, verrucae, and psoriasis. In large vascular lesions, it typically is employed at 0.45 to 10 milliseconds every 4 to 6 weeks for 10 or more treatments. Port-wine stains preferably are treated within the first few months of life to provide the most fading without the need for general anesthesia.¹⁶ On the other hand, systemic therapy with propranolol is preferred over lasers for infantile hemangiomas.¹⁷

Long-Pulsed Alexandrite Laser (755 nm)
The alexandrite laser often is used to treat deeper vascular lesions such as venous lakes and hypertrophic port-wine stains. The operator needs to be cautious, as this laser has a higher incidence of scarring at the settings used to treat vascular lesions (typically fluences around 60–85 J/cm²).¹⁸ It also may be used for hair reduction in disorders with hypertrichosis or hidradenitis suppurativa.¹⁹

Long-Pulsed Nd:YAG Laser
The long-pulsed Nd:YAG laser also can be used to treat deep vascular lesions and remove unwanted hair. Because of its low window of safety in the treatment of vascular lesions, the alexandrite laser usually is preferred. However, it is the preferred laser for treatment of unwanted hair and hidradenitis suppurativa in darker skin types. It often provides a 50% reduction in hair density after 9 treatments.²⁰

Quality-Switched Lasers
Pigment granules in melanosomes and tattoo particles are targeted with quality-switched (QS) lasers. Typically, a device will contain a combination of QS 532-nm potassium-titanyl-phosphate (KTP) lasers, QS 1064-nm Nd:YAG lasers, and QS 755-nm alexandrite lasers in 1 machine. In general, shorter wavelengths are used to treat epidermal lesions such as ephelides, lentigines, and café-au-lait macules. Longer wavelengths are used to treat deeper lesions such as nevus of Ota. A 2017 review suggested that café-au-lait macules with ragged borders (so-called coast of Maine borders) may respond well to QS lasers.²¹

Ablative Lasers
The 10,600-nm CO₂ laser and 2940-nm erbium:YAG laser can be used to debulk superficial tumors such as lymphangiomas, syringomas, angiofibromas, and xanthomas.²² These treatments have a higher risk for scarring than other lasers, so it is important to have a good understanding of desired clinical end points before using these devices.

Fractionated Lasers
Fractionated lasers can be nonablative (several devices are available in the 1410- to 1927-nm range) or ablative (CO₂ or erbium:YAG). In pediatrics, they are usually used to treat burn scars, traumatic scars, and mild to moderate acne scarring.²² The most common side effects from fractionated lasers are prolonged erythema or hyperpigmentation. In addition, it typically takes at least 3 treatments to notice improvements.

Excisions

Pediatric procedural dermatologists remove a variety of unique lesions through excision. A few tips are provided for some of the more common lesions that may be excised in children.

Accessory Tragi
Prior to excising an accessory tragus, the surgeon should consider documenting a facial nerve examination, as accessory tragi can be associated with complete or partial facial nerve dysfunction. Additionally, there usually is an underlying cartilage structure present within the tragus. The cartilage stalk also should be addressed during the excision to avoid a continued palpable deformity after excision.

Dermoid Cysts
Dermoid cysts are the most commonly diagnosed benign orbital lesion in children.²³ Exophytic periorbital lesions, which extend outside the orbital rim, can be removed through an infrabrow incision. Endophytic periorbital lesions, which are inside the orbital rim, should be removed through a crease incision. Midline lesions may have an intracranial extension and should be imaged through MRI and/or a computed tomography.²⁴ Because dermoid cysts usually are located below the orbicularis oculi muscle, the muscle should be fixed with a suture prior to closing with skin sutures.

Pilomatricomas
Typically, a linear incision is made overlying the lesion, and then the underlying tumor is removed with sharp or blunt dissection. However, if the overlying skin has been stretched thin, a lenticular excision that includes the thinned skin may improve cosmesis.

Congenital Nevi
Large congenital nevi typically are removed through staged excisions. Lower extremity lesions are best removed before 10 months of age or before walking begins to minimize wound tension. However, if the procedure is not performed in infancy, it is best to wait until walking becomes stable.²⁵ In older children, it is advisable to splint the affected lower extremity for 2 weeks to prevent dehiscence. The interval between excisions typically is 4 to 6 weeks for small lesions and 3 months for larger nevi.

Conclusion

Procedural pediatric dermatology is a broad and emerging field. As this article highlights, children are not small versions of adults and have unique biology, diseases, therapies, social situations, and ethical challenges from adults. This article provides a superficial overview of some of the more common issues faced by pediatric dermatologists and providers who perform procedures on infants, children, and teenagers. Readers who are interested in obtaining a more in-depth understanding of procedural pediatric dermatology should look at Procedural Pediatric Dermatology,¹ the first textbook to provide expert opinion and evidence-based information on procedural management of pediatric skin conditions.

In November 2019, the American Academy of Dermatology (AAD) and the National Psoriasis Foundation (NPF) released their first set of recommendations for the management of pediatric psoriasis.¹ The pediatric guidelines discuss methods of quantifying disease severity in children, triggers and comorbidities, and the efficacy and safety of various therapeutic agents. This review aims to discuss, in a condensed form, special considerations unique to the management of children with psoriasis as presented in the guidelines as well as grade A– and grade B–level treatment recommendations (Table).

Quantifying Psoriasis Severity in Children

Percentage body surface area (BSA) involvement is the most common mode of grading psoriasis severity, with less than 3% BSA involvement being considered mild, 3% to 10% BSA moderate, and more than 10% severe disease. In children, the standard method of measuring BSA is the rule of 9’s: the head and each arm make up 9% of the total BSA, each leg and the front and back of the torso respectively each make up 18%, and the genitalia make up 1%. It also is important to consider impact on quality of life, which may be remarkable in spite of limited BSA involvement. The children’s dermatology life quality index score may be utilized in combination with affected BSA to determine the burden of psoriasis in context of impact on daily life. This metric is available in both written and cartoon form, and it consists of 10 questions that include variables such as severity of itch, impact on social life, and effects on sleep. Most notably, this tool incorporates pruritus,² which generally is addressed inadequately in pediatric psoriasis.

Triggers and Comorbidities in Pediatric Patients

In children, it is important to identify and eliminate modifiable factors that may prompt psoriasis flares. Infections, particularly group A beta-hemolytic streptococcal infections, are a major trigger in neonates and infants. Other exacerbating factors in children include emotional stress, secondhand cigarette smoke, Kawasaki disease, and withdrawal from systemic corticosteroids.

Psoriatic arthritis (PsA) is a burdensome comorbidity affecting children with psoriasis. The prevalence of joint disease is 15-times greater in children with psoriasis vs those without,³ and 80% of children with PsA develop rheumatologic symptoms, which typically include oligoarticular disease and dactylitis in infants and girls and enthesitis and axial joint involvement in boys and older children, years prior to the onset of cutaneous disease.⁴ Uveitis often occurs in children with psoriasis and PsA but not in those with isolated cutaneous disease.

Compared to unaffected children, pediatric patients with psoriasis have greater prevalence of metabolic and cardiovascular risk factors during childhood, including central obesity, hypertension, hypertriglyceridemia, hypercholesterolemia, insulin resistance, atherosclerosis, arrythmia, and valvular heart disease. Family history of obesity increases the risk for early-onset development of cutaneous lesions,^5,6 and weight reduction may alleviate severity of psoriasis lesions.⁷ In the United States, many of the metabolic associations observed are particularly robust in Black and Hispanic children vs those of other races. Furthermore, the prevalence of inflammatory bowel disease is 3- to 4-times higher in children with psoriasis compared to those without.

As with other cutaneous diseases, it is important to be aware of social and mental health concerns in children with psoriasis. The majority of pediatric patients with psoriasis experience name-calling, shaming, or bullying, and many have concerns from skin shedding and malodor. Independent risk for depression after the onset of psoriasis is high. Affected older children and adolescents are at increased risk for alcohol and drug abuse as well as eating disorders.

Despite these identified comorbidities, there are no unique screening recommendations for arthritis, ophthalmologic disease, metabolic disease, cardiovascular disease, gastrointestinal tract disease, or mental health issues in children with psoriasis. Rather, these patients should be monitored according to the American Academy of Pediatrics or American Diabetes Association guidelines for all pediatric patients.^8,9 Nonetheless, educating patients and guardians about these potential issues may be warranted.

Topical Therapies

For children with mild to moderate psoriasis, topical therapies are first line. Despite being off label, topical corticosteroids are the mainstay of therapy for localized psoriatic plaques in children. Topical vitamin D analogues—calcitriol and calcipotriol/calcipotriene—are highly effective and well tolerated, and they frequently are used in combination with topical corticosteroids. Topical calcineurin inhibitors, namely tacrolimus, also are used off label but are considered first line for sensitive regions of the skin in children, including the face, genitalia, and body folds. There currently is limited evidence for supporting the use of the topical vitamin A analogue tazarotene in children with psoriasis, though some consider its off-label use effective for pediatric nail psoriasis. It also may be used as an adjunct to topical corticosteroids to minimize irritation.

Although there is no gold standard topical regimen, combination therapy with a high-potency topical steroid and topical vitamin D analogue commonly is used to minimize steroid-induced side effects. For the first 2 weeks of treatment, they each may be applied once daily or mixed together and applied twice daily. For subsequent maintenance, topical calcipotriene may be applied on weekdays and topical steroids only on weekends. Combination calcipotriol–betamethasone dipropionate also is available as cream, ointment, foam, and suspension vehicles for use on the body and scalp in children aged 12 years and older. Tacrolimus ointment 0.1% may be applied in a thin layer up to twice daily. Concurrent emollient use also is recommended with these therapies.

Health care providers should educate patients and guardians about the potential side effects of topical therapies. They also should provide explicit instructions for amount, site, frequency, and duration of application. Topical corticosteroids commonly result in burning on application and may potentially cause skin thinning and striae with overuse. Topical vitamin D analogues may result in local irritation that may be improved by concurrent emollient use, and they generally should be avoided on sensitive sites. Topical calcineurin inhibitors are associated with burning, stinging, and pruritus, and the US Food and Drug Administration has issued a black-box warning related to risk for lymphoma with their chronic intermittent use. However, it was based on rare reports of lymphoma in transplant patients taking oral calcineurin inhibitors; no clinical trials to date in humans have demonstrated an increased risk for malignancy with topical calcineurin inhibitors.¹⁰ Tazarotene should be used cautiously in females of childbearing age given its teratogenic potential.

Children younger than 7 years are especially prone to suppression of the hypothalamic-pituitary-adrenal axis from topical corticosteroid therapy and theoretically hypercalcemia and hypervitaminosis D from topical vitamin D analogues, as their high BSA-to-volume ratio increases potential for systemic absorption. Children should avoid occlusive application of topical vitamin D analogues to large areas of the skin. Monitoring of vitamin D metabolites in the serum may be considered if calcipotriene or calcipotriol application to a large BSA is warranted.

Light-Based Therapy

In children with widespread psoriasis or those refractory to topical therapy, phototherapy may be considered. Narrowband UVB (311- to 313-nm wavelength) therapy is considered a first-line form of phototherapy in pediatric psoriasis. Mineral oil or emollient pretreatment to affected areas may augment the efficacy of UV-based treatments.¹¹ Excimer laser and UVA also may be efficacious, though evidence is limited in children. Treatment is recommended to start at 3 days a week, and once improvement is seen, the frequency can be decreased to 2 days a week. Once desired clearance is achieved, maintenance therapy can be continued at even longer intervals. Adjunctive use of tar preparations may potentiate the efficacy of phototherapy, though there is a theoretical increased risk for carcinogenicity with prolonged use of coal tar. Side effects of phototherapy include erythema, blistering hyperpigmentation, and pruritus. Psoralen is contraindicated in children younger than 12 years. All forms of phototherapy are contraindicated in children with generalized erythroderma and cutaneous cancer syndromes. Other important pediatric-specific considerations include anxiety that may be provoked by UV light machines and inconvenience of frequent appointments.

Nonbiologic Systemic Therapies

Systemic therapies may be considered in children with recalcitrant, widespread, or rapidly progressing psoriasis, particularly if the disease is accompanied by severe emotional and psychological burden. These drugs, which include methotrexate, cyclosporine, and acitretin (see eTable for recommended dosing), are advantageous in that they may be combined with other therapies; however, they have potential for dangerous toxicities.

Methotrexate is the most frequently utilized systemic therapy for psoriasis worldwide in children because of its low cost, once-weekly dosing, and the substantial amount of long-term efficacy and safety data available in the pediatric population. It is slow acting initially but has excellent long-term efficacy for nearly every subtype of psoriasis. The most common side effect of methotrexate is gastrointestinal tract intolerance. Nonetheless, adverse events are rare in children without prior history, with 1 large study (N=289) reporting no adverse events in more than 90% of patients aged 9 to 14 years treated with methotrexate.¹² Current guidelines recommend monitoring for bone marrow suppression and elevated transaminase levels 4 to 6 days after initiating treatment.¹ The absolute contraindications for methotrexate are pregnancy and liver disease, and caution should be taken in children with metabolic risk factors. Adolescents must be counseled regarding the elevated risk for hepatotoxicity associated with alcohol ingestion. Methotrexate therapy also requires 1 mg folic acid supplementation 6 to 7 days a week, which decreases the risk for developing folic acid deficiency and may decrease gastrointestinal tract intolerance and hepatic side effects that may result from therapy.

Cyclosporine is an effective and well-tolerated option for rapid control of severe psoriasis in children. It is useful for various types of psoriasis but generally is reserved for more severe subtypes, such as generalized pustular psoriasis, erythrodermic psoriasis, and uncontrolled plaque psoriasis. Long-term use of cyclosporine may result in renal toxicity and hypertension, and this therapy is absolutely contraindicated in children with kidney disease or hypertension at baseline. It is strongly recommended to evaluate blood pressure every week for the first month of therapy and at every subsequent follow-up visit, which may occur at variable intervals based on the judgement of the provider. Evaluation before and during treatment with cyclosporine also should include a complete blood cell count, complete metabolic panel, and lipid panel.

Systemic retinoids have a unique advantage over methotrexate and cyclosporine in that they are not immunosuppressive and therefore are not contraindicated in children who are very young or immunosuppressed. Children receiving systemic retinoids also can receive routine live vaccines—measles-mumps-rubella, varicella zoster, and rotavirus—that are contraindicated with other systemic therapies. Acitretin is particularly effective in pediatric patients with diffuse guttate psoriasis, pustular psoriasis, and palmoplantar psoriasis. Narrowband UVB therapy has been shown to augment the effectiveness of acitretin in children, which may allow for reduced acitretin dosing. Pustular psoriasis may respond as quickly as 3 weeks after initiation, whereas it may take 2 to 3 months before improvement is noticed in plaque psoriasis. Side effects of retinoids include skin dryness, hyperlipidemia, and gastrointestinal tract upset. The most severe long-term concern is skeletal toxicity, including premature epiphyseal closure, hyperostosis, periosteal bone formation, and decreased bone mineral density.¹ Vitamin A derivatives also are known teratogens and should be avoided in females of childbearing potential. Lipids and transaminases should be monitored routinely, and screening for depression and psychiatric symptoms should be performed frequently.¹

When utilizing systemic therapies, the objective should be to control the disease, maintain stability, and ultimately taper to the lowest effective dose or transition to a topical therapy, if feasible. Although no particular systemic therapy is recommended as first line for children with psoriasis, it is important to consider comorbidities, contraindications, monitoring frequency, mode of administration (injectable therapies elicit more psychological trauma in children than oral therapies), and expense when determining the best choice.

Biologics

Biologic agents are associated with very high to total psoriatic plaque clearance rates and require infrequent dosing and monitoring. However, their use may be limited by cost and injection phobias in children as well as limited evidence for their efficacy and safety in pediatric psoriasis. Several studies have established the safety and effectiveness of biologics in children with plaque psoriasis (see eTable for recommended dosing), whereas the evidence supporting their use in treating pustular and erythrodermic variants are limited to case reports and case series. The tumor necrosis factor α (TNF-α) inhibitor etanercept has been approved for use in children aged 4 years and older, and the IL-12/IL-23 inhibitor ustekinumab is approved in children aged 6 years and older. Other TNF-α inhibitors, namely infliximab and adalimumab, commonly are utilized off label for pediatric psoriasis. The most common side effect of biologic therapies in pediatric patients is injection-site reactions.¹ Prior to initiating therapy, children must undergo tuberculosis screening either by purified protein derivative testing or IFN-γ release assay. Testing should be repeated annually in individuals taking TNF-α inhibitors, though the utility of repeat testing when taking biologics in other classes is not clear. High-risk patients also should be screened for human immunodeficiency virus and hepatitis. Follow-up frequency may range from every 3 months to annually, based on judgement of the provider. In children who develop loss of response to biologics, methotrexate can be added to the regimen to attenuate formation of efficacy-reducing antidrug antibodies.

Final Thoughts

When managing children with psoriasis, it is important for dermatologists to appropriately educate guardians and children on the disease course, as well as consider the psychological, emotional, social, and financial factors that may direct decision-making regarding optimal therapeutics. Dermatologists should consider collaboration with the child’s primary care physician and other specialists to ensure that all needs are met.

These guidelines provide a framework agreed upon by numerous experts in pediatric psoriasis, but they are limited by gaps in the research. There still is much to be learned regarding the pathophysiology of psoriasis; the risk for developing comorbidities during adulthood; and the efficacy and safety of certain therapeutics, particularly biologics, in pediatric patients with psoriasis.

In November 2019, the American Academy of Dermatology (AAD) and the National Psoriasis Foundation (NPF) released their first set of recommendations for the management of pediatric psoriasis.¹ The pediatric guidelines discuss methods of quantifying disease severity in children, triggers and comorbidities, and the efficacy and safety of various therapeutic agents. This review aims to discuss, in a condensed form, special considerations unique to the management of children with psoriasis as presented in the guidelines as well as grade A– and grade B–level treatment recommendations (Table).

Quantifying Psoriasis Severity in Children

Percentage body surface area (BSA) involvement is the most common mode of grading psoriasis severity, with less than 3% BSA involvement being considered mild, 3% to 10% BSA moderate, and more than 10% severe disease. In children, the standard method of measuring BSA is the rule of 9’s: the head and each arm make up 9% of the total BSA, each leg and the front and back of the torso respectively each make up 18%, and the genitalia make up 1%. It also is important to consider impact on quality of life, which may be remarkable in spite of limited BSA involvement. The children’s dermatology life quality index score may be utilized in combination with affected BSA to determine the burden of psoriasis in context of impact on daily life. This metric is available in both written and cartoon form, and it consists of 10 questions that include variables such as severity of itch, impact on social life, and effects on sleep. Most notably, this tool incorporates pruritus,² which generally is addressed inadequately in pediatric psoriasis.

Triggers and Comorbidities in Pediatric Patients

In children, it is important to identify and eliminate modifiable factors that may prompt psoriasis flares. Infections, particularly group A beta-hemolytic streptococcal infections, are a major trigger in neonates and infants. Other exacerbating factors in children include emotional stress, secondhand cigarette smoke, Kawasaki disease, and withdrawal from systemic corticosteroids.

Psoriatic arthritis (PsA) is a burdensome comorbidity affecting children with psoriasis. The prevalence of joint disease is 15-times greater in children with psoriasis vs those without,³ and 80% of children with PsA develop rheumatologic symptoms, which typically include oligoarticular disease and dactylitis in infants and girls and enthesitis and axial joint involvement in boys and older children, years prior to the onset of cutaneous disease.⁴ Uveitis often occurs in children with psoriasis and PsA but not in those with isolated cutaneous disease.

Compared to unaffected children, pediatric patients with psoriasis have greater prevalence of metabolic and cardiovascular risk factors during childhood, including central obesity, hypertension, hypertriglyceridemia, hypercholesterolemia, insulin resistance, atherosclerosis, arrythmia, and valvular heart disease. Family history of obesity increases the risk for early-onset development of cutaneous lesions,^5,6 and weight reduction may alleviate severity of psoriasis lesions.⁷ In the United States, many of the metabolic associations observed are particularly robust in Black and Hispanic children vs those of other races. Furthermore, the prevalence of inflammatory bowel disease is 3- to 4-times higher in children with psoriasis compared to those without.

As with other cutaneous diseases, it is important to be aware of social and mental health concerns in children with psoriasis. The majority of pediatric patients with psoriasis experience name-calling, shaming, or bullying, and many have concerns from skin shedding and malodor. Independent risk for depression after the onset of psoriasis is high. Affected older children and adolescents are at increased risk for alcohol and drug abuse as well as eating disorders.

Despite these identified comorbidities, there are no unique screening recommendations for arthritis, ophthalmologic disease, metabolic disease, cardiovascular disease, gastrointestinal tract disease, or mental health issues in children with psoriasis. Rather, these patients should be monitored according to the American Academy of Pediatrics or American Diabetes Association guidelines for all pediatric patients.^8,9 Nonetheless, educating patients and guardians about these potential issues may be warranted.

Topical Therapies

For children with mild to moderate psoriasis, topical therapies are first line. Despite being off label, topical corticosteroids are the mainstay of therapy for localized psoriatic plaques in children. Topical vitamin D analogues—calcitriol and calcipotriol/calcipotriene—are highly effective and well tolerated, and they frequently are used in combination with topical corticosteroids. Topical calcineurin inhibitors, namely tacrolimus, also are used off label but are considered first line for sensitive regions of the skin in children, including the face, genitalia, and body folds. There currently is limited evidence for supporting the use of the topical vitamin A analogue tazarotene in children with psoriasis, though some consider its off-label use effective for pediatric nail psoriasis. It also may be used as an adjunct to topical corticosteroids to minimize irritation.

Although there is no gold standard topical regimen, combination therapy with a high-potency topical steroid and topical vitamin D analogue commonly is used to minimize steroid-induced side effects. For the first 2 weeks of treatment, they each may be applied once daily or mixed together and applied twice daily. For subsequent maintenance, topical calcipotriene may be applied on weekdays and topical steroids only on weekends. Combination calcipotriol–betamethasone dipropionate also is available as cream, ointment, foam, and suspension vehicles for use on the body and scalp in children aged 12 years and older. Tacrolimus ointment 0.1% may be applied in a thin layer up to twice daily. Concurrent emollient use also is recommended with these therapies.

Health care providers should educate patients and guardians about the potential side effects of topical therapies. They also should provide explicit instructions for amount, site, frequency, and duration of application. Topical corticosteroids commonly result in burning on application and may potentially cause skin thinning and striae with overuse. Topical vitamin D analogues may result in local irritation that may be improved by concurrent emollient use, and they generally should be avoided on sensitive sites. Topical calcineurin inhibitors are associated with burning, stinging, and pruritus, and the US Food and Drug Administration has issued a black-box warning related to risk for lymphoma with their chronic intermittent use. However, it was based on rare reports of lymphoma in transplant patients taking oral calcineurin inhibitors; no clinical trials to date in humans have demonstrated an increased risk for malignancy with topical calcineurin inhibitors.¹⁰ Tazarotene should be used cautiously in females of childbearing age given its teratogenic potential.

Children younger than 7 years are especially prone to suppression of the hypothalamic-pituitary-adrenal axis from topical corticosteroid therapy and theoretically hypercalcemia and hypervitaminosis D from topical vitamin D analogues, as their high BSA-to-volume ratio increases potential for systemic absorption. Children should avoid occlusive application of topical vitamin D analogues to large areas of the skin. Monitoring of vitamin D metabolites in the serum may be considered if calcipotriene or calcipotriol application to a large BSA is warranted.

Light-Based Therapy

In children with widespread psoriasis or those refractory to topical therapy, phototherapy may be considered. Narrowband UVB (311- to 313-nm wavelength) therapy is considered a first-line form of phototherapy in pediatric psoriasis. Mineral oil or emollient pretreatment to affected areas may augment the efficacy of UV-based treatments.¹¹ Excimer laser and UVA also may be efficacious, though evidence is limited in children. Treatment is recommended to start at 3 days a week, and once improvement is seen, the frequency can be decreased to 2 days a week. Once desired clearance is achieved, maintenance therapy can be continued at even longer intervals. Adjunctive use of tar preparations may potentiate the efficacy of phototherapy, though there is a theoretical increased risk for carcinogenicity with prolonged use of coal tar. Side effects of phototherapy include erythema, blistering hyperpigmentation, and pruritus. Psoralen is contraindicated in children younger than 12 years. All forms of phototherapy are contraindicated in children with generalized erythroderma and cutaneous cancer syndromes. Other important pediatric-specific considerations include anxiety that may be provoked by UV light machines and inconvenience of frequent appointments.

Nonbiologic Systemic Therapies

Systemic therapies may be considered in children with recalcitrant, widespread, or rapidly progressing psoriasis, particularly if the disease is accompanied by severe emotional and psychological burden. These drugs, which include methotrexate, cyclosporine, and acitretin (see eTable for recommended dosing), are advantageous in that they may be combined with other therapies; however, they have potential for dangerous toxicities.

Methotrexate is the most frequently utilized systemic therapy for psoriasis worldwide in children because of its low cost, once-weekly dosing, and the substantial amount of long-term efficacy and safety data available in the pediatric population. It is slow acting initially but has excellent long-term efficacy for nearly every subtype of psoriasis. The most common side effect of methotrexate is gastrointestinal tract intolerance. Nonetheless, adverse events are rare in children without prior history, with 1 large study (N=289) reporting no adverse events in more than 90% of patients aged 9 to 14 years treated with methotrexate.¹² Current guidelines recommend monitoring for bone marrow suppression and elevated transaminase levels 4 to 6 days after initiating treatment.¹ The absolute contraindications for methotrexate are pregnancy and liver disease, and caution should be taken in children with metabolic risk factors. Adolescents must be counseled regarding the elevated risk for hepatotoxicity associated with alcohol ingestion. Methotrexate therapy also requires 1 mg folic acid supplementation 6 to 7 days a week, which decreases the risk for developing folic acid deficiency and may decrease gastrointestinal tract intolerance and hepatic side effects that may result from therapy.

Cyclosporine is an effective and well-tolerated option for rapid control of severe psoriasis in children. It is useful for various types of psoriasis but generally is reserved for more severe subtypes, such as generalized pustular psoriasis, erythrodermic psoriasis, and uncontrolled plaque psoriasis. Long-term use of cyclosporine may result in renal toxicity and hypertension, and this therapy is absolutely contraindicated in children with kidney disease or hypertension at baseline. It is strongly recommended to evaluate blood pressure every week for the first month of therapy and at every subsequent follow-up visit, which may occur at variable intervals based on the judgement of the provider. Evaluation before and during treatment with cyclosporine also should include a complete blood cell count, complete metabolic panel, and lipid panel.

Systemic retinoids have a unique advantage over methotrexate and cyclosporine in that they are not immunosuppressive and therefore are not contraindicated in children who are very young or immunosuppressed. Children receiving systemic retinoids also can receive routine live vaccines—measles-mumps-rubella, varicella zoster, and rotavirus—that are contraindicated with other systemic therapies. Acitretin is particularly effective in pediatric patients with diffuse guttate psoriasis, pustular psoriasis, and palmoplantar psoriasis. Narrowband UVB therapy has been shown to augment the effectiveness of acitretin in children, which may allow for reduced acitretin dosing. Pustular psoriasis may respond as quickly as 3 weeks after initiation, whereas it may take 2 to 3 months before improvement is noticed in plaque psoriasis. Side effects of retinoids include skin dryness, hyperlipidemia, and gastrointestinal tract upset. The most severe long-term concern is skeletal toxicity, including premature epiphyseal closure, hyperostosis, periosteal bone formation, and decreased bone mineral density.¹ Vitamin A derivatives also are known teratogens and should be avoided in females of childbearing potential. Lipids and transaminases should be monitored routinely, and screening for depression and psychiatric symptoms should be performed frequently.¹

When utilizing systemic therapies, the objective should be to control the disease, maintain stability, and ultimately taper to the lowest effective dose or transition to a topical therapy, if feasible. Although no particular systemic therapy is recommended as first line for children with psoriasis, it is important to consider comorbidities, contraindications, monitoring frequency, mode of administration (injectable therapies elicit more psychological trauma in children than oral therapies), and expense when determining the best choice.

Biologics

Biologic agents are associated with very high to total psoriatic plaque clearance rates and require infrequent dosing and monitoring. However, their use may be limited by cost and injection phobias in children as well as limited evidence for their efficacy and safety in pediatric psoriasis. Several studies have established the safety and effectiveness of biologics in children with plaque psoriasis (see eTable for recommended dosing), whereas the evidence supporting their use in treating pustular and erythrodermic variants are limited to case reports and case series. The tumor necrosis factor α (TNF-α) inhibitor etanercept has been approved for use in children aged 4 years and older, and the IL-12/IL-23 inhibitor ustekinumab is approved in children aged 6 years and older. Other TNF-α inhibitors, namely infliximab and adalimumab, commonly are utilized off label for pediatric psoriasis. The most common side effect of biologic therapies in pediatric patients is injection-site reactions.¹ Prior to initiating therapy, children must undergo tuberculosis screening either by purified protein derivative testing or IFN-γ release assay. Testing should be repeated annually in individuals taking TNF-α inhibitors, though the utility of repeat testing when taking biologics in other classes is not clear. High-risk patients also should be screened for human immunodeficiency virus and hepatitis. Follow-up frequency may range from every 3 months to annually, based on judgement of the provider. In children who develop loss of response to biologics, methotrexate can be added to the regimen to attenuate formation of efficacy-reducing antidrug antibodies.

Final Thoughts

When managing children with psoriasis, it is important for dermatologists to appropriately educate guardians and children on the disease course, as well as consider the psychological, emotional, social, and financial factors that may direct decision-making regarding optimal therapeutics. Dermatologists should consider collaboration with the child’s primary care physician and other specialists to ensure that all needs are met.

These guidelines provide a framework agreed upon by numerous experts in pediatric psoriasis, but they are limited by gaps in the research. There still is much to be learned regarding the pathophysiology of psoriasis; the risk for developing comorbidities during adulthood; and the efficacy and safety of certain therapeutics, particularly biologics, in pediatric patients with psoriasis.

In November 2019, the American Academy of Dermatology (AAD) and the National Psoriasis Foundation (NPF) released their first set of recommendations for the management of pediatric psoriasis.¹ The pediatric guidelines discuss methods of quantifying disease severity in children, triggers and comorbidities, and the efficacy and safety of various therapeutic agents. This review aims to discuss, in a condensed form, special considerations unique to the management of children with psoriasis as presented in the guidelines as well as grade A– and grade B–level treatment recommendations (Table).

Quantifying Psoriasis Severity in Children

Percentage body surface area (BSA) involvement is the most common mode of grading psoriasis severity, with less than 3% BSA involvement being considered mild, 3% to 10% BSA moderate, and more than 10% severe disease. In children, the standard method of measuring BSA is the rule of 9’s: the head and each arm make up 9% of the total BSA, each leg and the front and back of the torso respectively each make up 18%, and the genitalia make up 1%. It also is important to consider impact on quality of life, which may be remarkable in spite of limited BSA involvement. The children’s dermatology life quality index score may be utilized in combination with affected BSA to determine the burden of psoriasis in context of impact on daily life. This metric is available in both written and cartoon form, and it consists of 10 questions that include variables such as severity of itch, impact on social life, and effects on sleep. Most notably, this tool incorporates pruritus,² which generally is addressed inadequately in pediatric psoriasis.

Triggers and Comorbidities in Pediatric Patients

In children, it is important to identify and eliminate modifiable factors that may prompt psoriasis flares. Infections, particularly group A beta-hemolytic streptococcal infections, are a major trigger in neonates and infants. Other exacerbating factors in children include emotional stress, secondhand cigarette smoke, Kawasaki disease, and withdrawal from systemic corticosteroids.

Psoriatic arthritis (PsA) is a burdensome comorbidity affecting children with psoriasis. The prevalence of joint disease is 15-times greater in children with psoriasis vs those without,³ and 80% of children with PsA develop rheumatologic symptoms, which typically include oligoarticular disease and dactylitis in infants and girls and enthesitis and axial joint involvement in boys and older children, years prior to the onset of cutaneous disease.⁴ Uveitis often occurs in children with psoriasis and PsA but not in those with isolated cutaneous disease.

Compared to unaffected children, pediatric patients with psoriasis have greater prevalence of metabolic and cardiovascular risk factors during childhood, including central obesity, hypertension, hypertriglyceridemia, hypercholesterolemia, insulin resistance, atherosclerosis, arrythmia, and valvular heart disease. Family history of obesity increases the risk for early-onset development of cutaneous lesions,^5,6 and weight reduction may alleviate severity of psoriasis lesions.⁷ In the United States, many of the metabolic associations observed are particularly robust in Black and Hispanic children vs those of other races. Furthermore, the prevalence of inflammatory bowel disease is 3- to 4-times higher in children with psoriasis compared to those without.

As with other cutaneous diseases, it is important to be aware of social and mental health concerns in children with psoriasis. The majority of pediatric patients with psoriasis experience name-calling, shaming, or bullying, and many have concerns from skin shedding and malodor. Independent risk for depression after the onset of psoriasis is high. Affected older children and adolescents are at increased risk for alcohol and drug abuse as well as eating disorders.

Despite these identified comorbidities, there are no unique screening recommendations for arthritis, ophthalmologic disease, metabolic disease, cardiovascular disease, gastrointestinal tract disease, or mental health issues in children with psoriasis. Rather, these patients should be monitored according to the American Academy of Pediatrics or American Diabetes Association guidelines for all pediatric patients.^8,9 Nonetheless, educating patients and guardians about these potential issues may be warranted.

Topical Therapies

For children with mild to moderate psoriasis, topical therapies are first line. Despite being off label, topical corticosteroids are the mainstay of therapy for localized psoriatic plaques in children. Topical vitamin D analogues—calcitriol and calcipotriol/calcipotriene—are highly effective and well tolerated, and they frequently are used in combination with topical corticosteroids. Topical calcineurin inhibitors, namely tacrolimus, also are used off label but are considered first line for sensitive regions of the skin in children, including the face, genitalia, and body folds. There currently is limited evidence for supporting the use of the topical vitamin A analogue tazarotene in children with psoriasis, though some consider its off-label use effective for pediatric nail psoriasis. It also may be used as an adjunct to topical corticosteroids to minimize irritation.

Although there is no gold standard topical regimen, combination therapy with a high-potency topical steroid and topical vitamin D analogue commonly is used to minimize steroid-induced side effects. For the first 2 weeks of treatment, they each may be applied once daily or mixed together and applied twice daily. For subsequent maintenance, topical calcipotriene may be applied on weekdays and topical steroids only on weekends. Combination calcipotriol–betamethasone dipropionate also is available as cream, ointment, foam, and suspension vehicles for use on the body and scalp in children aged 12 years and older. Tacrolimus ointment 0.1% may be applied in a thin layer up to twice daily. Concurrent emollient use also is recommended with these therapies.

Health care providers should educate patients and guardians about the potential side effects of topical therapies. They also should provide explicit instructions for amount, site, frequency, and duration of application. Topical corticosteroids commonly result in burning on application and may potentially cause skin thinning and striae with overuse. Topical vitamin D analogues may result in local irritation that may be improved by concurrent emollient use, and they generally should be avoided on sensitive sites. Topical calcineurin inhibitors are associated with burning, stinging, and pruritus, and the US Food and Drug Administration has issued a black-box warning related to risk for lymphoma with their chronic intermittent use. However, it was based on rare reports of lymphoma in transplant patients taking oral calcineurin inhibitors; no clinical trials to date in humans have demonstrated an increased risk for malignancy with topical calcineurin inhibitors.¹⁰ Tazarotene should be used cautiously in females of childbearing age given its teratogenic potential.

Children younger than 7 years are especially prone to suppression of the hypothalamic-pituitary-adrenal axis from topical corticosteroid therapy and theoretically hypercalcemia and hypervitaminosis D from topical vitamin D analogues, as their high BSA-to-volume ratio increases potential for systemic absorption. Children should avoid occlusive application of topical vitamin D analogues to large areas of the skin. Monitoring of vitamin D metabolites in the serum may be considered if calcipotriene or calcipotriol application to a large BSA is warranted.

Light-Based Therapy

In children with widespread psoriasis or those refractory to topical therapy, phototherapy may be considered. Narrowband UVB (311- to 313-nm wavelength) therapy is considered a first-line form of phototherapy in pediatric psoriasis. Mineral oil or emollient pretreatment to affected areas may augment the efficacy of UV-based treatments.¹¹ Excimer laser and UVA also may be efficacious, though evidence is limited in children. Treatment is recommended to start at 3 days a week, and once improvement is seen, the frequency can be decreased to 2 days a week. Once desired clearance is achieved, maintenance therapy can be continued at even longer intervals. Adjunctive use of tar preparations may potentiate the efficacy of phototherapy, though there is a theoretical increased risk for carcinogenicity with prolonged use of coal tar. Side effects of phototherapy include erythema, blistering hyperpigmentation, and pruritus. Psoralen is contraindicated in children younger than 12 years. All forms of phototherapy are contraindicated in children with generalized erythroderma and cutaneous cancer syndromes. Other important pediatric-specific considerations include anxiety that may be provoked by UV light machines and inconvenience of frequent appointments.

Nonbiologic Systemic Therapies

Systemic therapies may be considered in children with recalcitrant, widespread, or rapidly progressing psoriasis, particularly if the disease is accompanied by severe emotional and psychological burden. These drugs, which include methotrexate, cyclosporine, and acitretin (see eTable for recommended dosing), are advantageous in that they may be combined with other therapies; however, they have potential for dangerous toxicities.

Methotrexate is the most frequently utilized systemic therapy for psoriasis worldwide in children because of its low cost, once-weekly dosing, and the substantial amount of long-term efficacy and safety data available in the pediatric population. It is slow acting initially but has excellent long-term efficacy for nearly every subtype of psoriasis. The most common side effect of methotrexate is gastrointestinal tract intolerance. Nonetheless, adverse events are rare in children without prior history, with 1 large study (N=289) reporting no adverse events in more than 90% of patients aged 9 to 14 years treated with methotrexate.¹² Current guidelines recommend monitoring for bone marrow suppression and elevated transaminase levels 4 to 6 days after initiating treatment.¹ The absolute contraindications for methotrexate are pregnancy and liver disease, and caution should be taken in children with metabolic risk factors. Adolescents must be counseled regarding the elevated risk for hepatotoxicity associated with alcohol ingestion. Methotrexate therapy also requires 1 mg folic acid supplementation 6 to 7 days a week, which decreases the risk for developing folic acid deficiency and may decrease gastrointestinal tract intolerance and hepatic side effects that may result from therapy.

Cyclosporine is an effective and well-tolerated option for rapid control of severe psoriasis in children. It is useful for various types of psoriasis but generally is reserved for more severe subtypes, such as generalized pustular psoriasis, erythrodermic psoriasis, and uncontrolled plaque psoriasis. Long-term use of cyclosporine may result in renal toxicity and hypertension, and this therapy is absolutely contraindicated in children with kidney disease or hypertension at baseline. It is strongly recommended to evaluate blood pressure every week for the first month of therapy and at every subsequent follow-up visit, which may occur at variable intervals based on the judgement of the provider. Evaluation before and during treatment with cyclosporine also should include a complete blood cell count, complete metabolic panel, and lipid panel.

Systemic retinoids have a unique advantage over methotrexate and cyclosporine in that they are not immunosuppressive and therefore are not contraindicated in children who are very young or immunosuppressed. Children receiving systemic retinoids also can receive routine live vaccines—measles-mumps-rubella, varicella zoster, and rotavirus—that are contraindicated with other systemic therapies. Acitretin is particularly effective in pediatric patients with diffuse guttate psoriasis, pustular psoriasis, and palmoplantar psoriasis. Narrowband UVB therapy has been shown to augment the effectiveness of acitretin in children, which may allow for reduced acitretin dosing. Pustular psoriasis may respond as quickly as 3 weeks after initiation, whereas it may take 2 to 3 months before improvement is noticed in plaque psoriasis. Side effects of retinoids include skin dryness, hyperlipidemia, and gastrointestinal tract upset. The most severe long-term concern is skeletal toxicity, including premature epiphyseal closure, hyperostosis, periosteal bone formation, and decreased bone mineral density.¹ Vitamin A derivatives also are known teratogens and should be avoided in females of childbearing potential. Lipids and transaminases should be monitored routinely, and screening for depression and psychiatric symptoms should be performed frequently.¹

When utilizing systemic therapies, the objective should be to control the disease, maintain stability, and ultimately taper to the lowest effective dose or transition to a topical therapy, if feasible. Although no particular systemic therapy is recommended as first line for children with psoriasis, it is important to consider comorbidities, contraindications, monitoring frequency, mode of administration (injectable therapies elicit more psychological trauma in children than oral therapies), and expense when determining the best choice.

Biologics

Biologic agents are associated with very high to total psoriatic plaque clearance rates and require infrequent dosing and monitoring. However, their use may be limited by cost and injection phobias in children as well as limited evidence for their efficacy and safety in pediatric psoriasis. Several studies have established the safety and effectiveness of biologics in children with plaque psoriasis (see eTable for recommended dosing), whereas the evidence supporting their use in treating pustular and erythrodermic variants are limited to case reports and case series. The tumor necrosis factor α (TNF-α) inhibitor etanercept has been approved for use in children aged 4 years and older, and the IL-12/IL-23 inhibitor ustekinumab is approved in children aged 6 years and older. Other TNF-α inhibitors, namely infliximab and adalimumab, commonly are utilized off label for pediatric psoriasis. The most common side effect of biologic therapies in pediatric patients is injection-site reactions.¹ Prior to initiating therapy, children must undergo tuberculosis screening either by purified protein derivative testing or IFN-γ release assay. Testing should be repeated annually in individuals taking TNF-α inhibitors, though the utility of repeat testing when taking biologics in other classes is not clear. High-risk patients also should be screened for human immunodeficiency virus and hepatitis. Follow-up frequency may range from every 3 months to annually, based on judgement of the provider. In children who develop loss of response to biologics, methotrexate can be added to the regimen to attenuate formation of efficacy-reducing antidrug antibodies.

Final Thoughts

When managing children with psoriasis, it is important for dermatologists to appropriately educate guardians and children on the disease course, as well as consider the psychological, emotional, social, and financial factors that may direct decision-making regarding optimal therapeutics. Dermatologists should consider collaboration with the child’s primary care physician and other specialists to ensure that all needs are met.

These guidelines provide a framework agreed upon by numerous experts in pediatric psoriasis, but they are limited by gaps in the research. There still is much to be learned regarding the pathophysiology of psoriasis; the risk for developing comorbidities during adulthood; and the efficacy and safety of certain therapeutics, particularly biologics, in pediatric patients with psoriasis.

Mercury poisoning affects multiple body systems, leading to variable clinical presentations. Mercury intoxication at low levels frequently presents with weakness, fatigue, weight loss, and abdominal pain. At higher levels of mercury intoxication, tremors and neurologic dysfunction are more prevalent.¹ Dermatologic manifestations of mercury exposure vary and include pink disease (acrodynia), mercury exanthem, contact dermatitis, and cutaneous granulomas. Untreated mercury poisoning may result in severe complications, including renal tubular necrosis, pneumonitis, persistent neurologic dysfunction, and fatality in some cases.^1,2

Pink disease is a rare disease that typically arises in infants and young children from chronic mercury exposure.³ We report a unique presentation of pink disease occurring in an 18-year-old woman following mercury exposure.

Case Report

An 18-year-old woman who was previously healthy presented to the hospital for evaluation of body aches and back pain. She reported a transient rash on the torso 2 weeks prior, but at the current presentation, only the distal upper and lower extremities were involved. A review of systems revealed myalgia, most severe in the lower back; muscle spasms; stiffness in the fingers; abdominal pain; constipation; paresthesia in the hands and feet; hyperhidrosis; and generalized weakness.

Vitals on admission revealed tachycardia (112 beats per minute). Physical examination revealed the patient was pale and fatigued; she appeared to be in pain, with observable facial grimacing and muscle spasms in the legs. She had poorly demarcated pink macules and papules scattered on the left palm (Figure 1), right forearm, right wrist, and dorsal aspects of the feet including the soles. A few pinpoint pustules were present on the left fifth digit.

A diagnosis of mercury poisoning was made along with a component of postinfectious reactive arthropathy due to Campylobacter. The myokymia and skin eruption were believed to be secondary to mercury poisoning. The patient was started on ciprofloxacin (750 mg twice daily), intravenous immunoglobulin for Campylobacter, a 2-week treatment regimen with the chelating agent succimer (500 mg twice daily) for mercury poisoning, and a 3-day regimen of pulse intravenous steroids (intravenous methylprednisolone 500 mg once daily) to reduce inflammation. Repeat mercury levels showed a downward trend, and the rash improved with time. All family members were advised to undergo testing for mercury exposure.

Comment

Manifestations of Mercury Poisoning
Dermatologic manifestations of mercury exposure are varied. The most common—allergic contact dermatitis—presents after repeat systemic or topical exposure.⁴ Mercury exanthem is an acute systemic contact dermatitis most commonly triggered by mercury vapor inhalation. It manifests as an erythematous maculopapular eruption predominantly involving the flexural areas and the anterior thighs in a V-shaped distribution.⁵ Purpura may be seen in severe cases. Cutaneous granulomas after direct injection of mercury also have been reported as well as cutaneous hyperpigmentation after chronic mercury absorption.⁶

Presentation of Pink Disease
Pink disease occurs in children after chronic mercury exposure. It was a common pediatric disorder in the 19th century due to the presence of mercury in certain anthelmintics and teething powders.⁷ However, prevalence drastically decreased after the removal of mercury from these products.³ Although pink disease classically was associated with mercury ingestion, cases also occurred secondary to external application of mercury.⁷ Additionally, in 1988 a case was reported in a 14-month-old girl after inhalation of mercury vapor from a spilled bottle of mercury.³

Pink disease begins with pink discoloration of the fingertips, nose, and toes, and later progresses to involvement of the hands and feet. Erythema, edema, and desquamation of the hands and feet are seen, along with irritability and autonomic dysfunction that manifests as profuse perspiration, tachycardia, and hypertension.³

Diagnosis of Pink Disease
The differential diagnosis of palmoplantar rash is broad and includes rickettsial disease; syphilis; scabies; toxic shock syndrome; infective endocarditis; meningococcal infection; hand-foot-and-mouth disease; dermatophytosis; and palmoplantar keratodermas. The involvement of the hands and feet in our patient, along with hyperhidrosis, tachycardia, and paresthesia, led us to believe that her condition was a variation of pink disease. The patient’s age at presentation (18 years) was unique, as it is atypical for pink disease. Although the polyarthropathy was attributed to Campylobacter, it is important to note that high levels of mercury exposure also have been associated with polyarthritis,⁸ polyneuropathy,⁴ and neuromuscular abnormalities on electromyography.⁴ Therefore, it is possible that the presence of these symptoms in our patient was either secondary to or compounded by mercury exposure.

Mercury Poisoning
Diagnosis of mercury poisoning can be made by assessing blood, urine, hair, or nail concentrations. However, as mercury deposits in multiple organs, individual concentrations do not correlate with total-body mercury levels.¹ Currently, no universal diagnostic criteria for mercury toxicity exist, though a provocation test with the chelating agent 2,3-dimercaptopropanesulfonate is considered reliable in assessing total-body mercury burden.¹

Elemental mercury, as found in some thermometers, dental amalgams, and electrical appliances (eg, certain switches, fluorescent light bulbs), can be converted to inorganic mercury in the body.⁹ Elemental mercury is vaporized at room temperature; the predominant route of exposure is by subsequent inhalation and lung absorbtion.¹⁰ Cutaneous absorption of high concentrations of elementary mercury in either liquid or vapor form may occur, though the rate is slow and absorption is poor. In cases of accidental exposure, contaminated clothing should be removed and immediately decontaminated or disposed. Exposed skin should be washed with a mild soap and water and rinsed thoroughly.¹⁰

The treatment of inorganic mercury poisoning is accomplished with the chelating agents succimer, dimercaptopropanesulfonate, dimercaprol, or D-penicillamine.¹ In symptomatic cases with high clinical suspicion, the first dose of chelation treatment should be initiated early without delay for laboratory confirmation, as treatment efficacy decreases with an increased interim between exposure and onset of chelation.¹¹ Combination chelation therapy also may be used in treatment. Plasma exchange or hemodialysis are treatment options for extreme, life-threatening cases.¹

Conclusion

Mercury exposure should be included in the differential diagnosis of patients presenting with a rash on the palms and soles, especially in young patients with systemic symptoms. A high level of suspicion and a thorough history can prevent a delay in treatment and an unnecessarily extensive and expensive workup. An emphasis on early diagnosis and treatment is important for optimal outcomes and can prevent the severe and potentially devastating consequences of mercury toxicity.

Mercury poisoning affects multiple body systems, leading to variable clinical presentations. Mercury intoxication at low levels frequently presents with weakness, fatigue, weight loss, and abdominal pain. At higher levels of mercury intoxication, tremors and neurologic dysfunction are more prevalent.¹ Dermatologic manifestations of mercury exposure vary and include pink disease (acrodynia), mercury exanthem, contact dermatitis, and cutaneous granulomas. Untreated mercury poisoning may result in severe complications, including renal tubular necrosis, pneumonitis, persistent neurologic dysfunction, and fatality in some cases.^1,2

Pink disease is a rare disease that typically arises in infants and young children from chronic mercury exposure.³ We report a unique presentation of pink disease occurring in an 18-year-old woman following mercury exposure.

Case Report

An 18-year-old woman who was previously healthy presented to the hospital for evaluation of body aches and back pain. She reported a transient rash on the torso 2 weeks prior, but at the current presentation, only the distal upper and lower extremities were involved. A review of systems revealed myalgia, most severe in the lower back; muscle spasms; stiffness in the fingers; abdominal pain; constipation; paresthesia in the hands and feet; hyperhidrosis; and generalized weakness.

Vitals on admission revealed tachycardia (112 beats per minute). Physical examination revealed the patient was pale and fatigued; she appeared to be in pain, with observable facial grimacing and muscle spasms in the legs. She had poorly demarcated pink macules and papules scattered on the left palm (Figure 1), right forearm, right wrist, and dorsal aspects of the feet including the soles. A few pinpoint pustules were present on the left fifth digit.

A diagnosis of mercury poisoning was made along with a component of postinfectious reactive arthropathy due to Campylobacter. The myokymia and skin eruption were believed to be secondary to mercury poisoning. The patient was started on ciprofloxacin (750 mg twice daily), intravenous immunoglobulin for Campylobacter, a 2-week treatment regimen with the chelating agent succimer (500 mg twice daily) for mercury poisoning, and a 3-day regimen of pulse intravenous steroids (intravenous methylprednisolone 500 mg once daily) to reduce inflammation. Repeat mercury levels showed a downward trend, and the rash improved with time. All family members were advised to undergo testing for mercury exposure.

Comment

Manifestations of Mercury Poisoning
Dermatologic manifestations of mercury exposure are varied. The most common—allergic contact dermatitis—presents after repeat systemic or topical exposure.⁴ Mercury exanthem is an acute systemic contact dermatitis most commonly triggered by mercury vapor inhalation. It manifests as an erythematous maculopapular eruption predominantly involving the flexural areas and the anterior thighs in a V-shaped distribution.⁵ Purpura may be seen in severe cases. Cutaneous granulomas after direct injection of mercury also have been reported as well as cutaneous hyperpigmentation after chronic mercury absorption.⁶

Presentation of Pink Disease
Pink disease occurs in children after chronic mercury exposure. It was a common pediatric disorder in the 19th century due to the presence of mercury in certain anthelmintics and teething powders.⁷ However, prevalence drastically decreased after the removal of mercury from these products.³ Although pink disease classically was associated with mercury ingestion, cases also occurred secondary to external application of mercury.⁷ Additionally, in 1988 a case was reported in a 14-month-old girl after inhalation of mercury vapor from a spilled bottle of mercury.³

Pink disease begins with pink discoloration of the fingertips, nose, and toes, and later progresses to involvement of the hands and feet. Erythema, edema, and desquamation of the hands and feet are seen, along with irritability and autonomic dysfunction that manifests as profuse perspiration, tachycardia, and hypertension.³

Diagnosis of Pink Disease
The differential diagnosis of palmoplantar rash is broad and includes rickettsial disease; syphilis; scabies; toxic shock syndrome; infective endocarditis; meningococcal infection; hand-foot-and-mouth disease; dermatophytosis; and palmoplantar keratodermas. The involvement of the hands and feet in our patient, along with hyperhidrosis, tachycardia, and paresthesia, led us to believe that her condition was a variation of pink disease. The patient’s age at presentation (18 years) was unique, as it is atypical for pink disease. Although the polyarthropathy was attributed to Campylobacter, it is important to note that high levels of mercury exposure also have been associated with polyarthritis,⁸ polyneuropathy,⁴ and neuromuscular abnormalities on electromyography.⁴ Therefore, it is possible that the presence of these symptoms in our patient was either secondary to or compounded by mercury exposure.

Mercury Poisoning
Diagnosis of mercury poisoning can be made by assessing blood, urine, hair, or nail concentrations. However, as mercury deposits in multiple organs, individual concentrations do not correlate with total-body mercury levels.¹ Currently, no universal diagnostic criteria for mercury toxicity exist, though a provocation test with the chelating agent 2,3-dimercaptopropanesulfonate is considered reliable in assessing total-body mercury burden.¹

Elemental mercury, as found in some thermometers, dental amalgams, and electrical appliances (eg, certain switches, fluorescent light bulbs), can be converted to inorganic mercury in the body.⁹ Elemental mercury is vaporized at room temperature; the predominant route of exposure is by subsequent inhalation and lung absorbtion.¹⁰ Cutaneous absorption of high concentrations of elementary mercury in either liquid or vapor form may occur, though the rate is slow and absorption is poor. In cases of accidental exposure, contaminated clothing should be removed and immediately decontaminated or disposed. Exposed skin should be washed with a mild soap and water and rinsed thoroughly.¹⁰

The treatment of inorganic mercury poisoning is accomplished with the chelating agents succimer, dimercaptopropanesulfonate, dimercaprol, or D-penicillamine.¹ In symptomatic cases with high clinical suspicion, the first dose of chelation treatment should be initiated early without delay for laboratory confirmation, as treatment efficacy decreases with an increased interim between exposure and onset of chelation.¹¹ Combination chelation therapy also may be used in treatment. Plasma exchange or hemodialysis are treatment options for extreme, life-threatening cases.¹

Conclusion

Mercury exposure should be included in the differential diagnosis of patients presenting with a rash on the palms and soles, especially in young patients with systemic symptoms. A high level of suspicion and a thorough history can prevent a delay in treatment and an unnecessarily extensive and expensive workup. An emphasis on early diagnosis and treatment is important for optimal outcomes and can prevent the severe and potentially devastating consequences of mercury toxicity.

Mercury poisoning affects multiple body systems, leading to variable clinical presentations. Mercury intoxication at low levels frequently presents with weakness, fatigue, weight loss, and abdominal pain. At higher levels of mercury intoxication, tremors and neurologic dysfunction are more prevalent.¹ Dermatologic manifestations of mercury exposure vary and include pink disease (acrodynia), mercury exanthem, contact dermatitis, and cutaneous granulomas. Untreated mercury poisoning may result in severe complications, including renal tubular necrosis, pneumonitis, persistent neurologic dysfunction, and fatality in some cases.^1,2

Pink disease is a rare disease that typically arises in infants and young children from chronic mercury exposure.³ We report a unique presentation of pink disease occurring in an 18-year-old woman following mercury exposure.

Case Report

An 18-year-old woman who was previously healthy presented to the hospital for evaluation of body aches and back pain. She reported a transient rash on the torso 2 weeks prior, but at the current presentation, only the distal upper and lower extremities were involved. A review of systems revealed myalgia, most severe in the lower back; muscle spasms; stiffness in the fingers; abdominal pain; constipation; paresthesia in the hands and feet; hyperhidrosis; and generalized weakness.

Vitals on admission revealed tachycardia (112 beats per minute). Physical examination revealed the patient was pale and fatigued; she appeared to be in pain, with observable facial grimacing and muscle spasms in the legs. She had poorly demarcated pink macules and papules scattered on the left palm (Figure 1), right forearm, right wrist, and dorsal aspects of the feet including the soles. A few pinpoint pustules were present on the left fifth digit.

A diagnosis of mercury poisoning was made along with a component of postinfectious reactive arthropathy due to Campylobacter. The myokymia and skin eruption were believed to be secondary to mercury poisoning. The patient was started on ciprofloxacin (750 mg twice daily), intravenous immunoglobulin for Campylobacter, a 2-week treatment regimen with the chelating agent succimer (500 mg twice daily) for mercury poisoning, and a 3-day regimen of pulse intravenous steroids (intravenous methylprednisolone 500 mg once daily) to reduce inflammation. Repeat mercury levels showed a downward trend, and the rash improved with time. All family members were advised to undergo testing for mercury exposure.

Comment

Manifestations of Mercury Poisoning
Dermatologic manifestations of mercury exposure are varied. The most common—allergic contact dermatitis—presents after repeat systemic or topical exposure.⁴ Mercury exanthem is an acute systemic contact dermatitis most commonly triggered by mercury vapor inhalation. It manifests as an erythematous maculopapular eruption predominantly involving the flexural areas and the anterior thighs in a V-shaped distribution.⁵ Purpura may be seen in severe cases. Cutaneous granulomas after direct injection of mercury also have been reported as well as cutaneous hyperpigmentation after chronic mercury absorption.⁶

Presentation of Pink Disease
Pink disease occurs in children after chronic mercury exposure. It was a common pediatric disorder in the 19th century due to the presence of mercury in certain anthelmintics and teething powders.⁷ However, prevalence drastically decreased after the removal of mercury from these products.³ Although pink disease classically was associated with mercury ingestion, cases also occurred secondary to external application of mercury.⁷ Additionally, in 1988 a case was reported in a 14-month-old girl after inhalation of mercury vapor from a spilled bottle of mercury.³

Pink disease begins with pink discoloration of the fingertips, nose, and toes, and later progresses to involvement of the hands and feet. Erythema, edema, and desquamation of the hands and feet are seen, along with irritability and autonomic dysfunction that manifests as profuse perspiration, tachycardia, and hypertension.³

Diagnosis of Pink Disease
The differential diagnosis of palmoplantar rash is broad and includes rickettsial disease; syphilis; scabies; toxic shock syndrome; infective endocarditis; meningococcal infection; hand-foot-and-mouth disease; dermatophytosis; and palmoplantar keratodermas. The involvement of the hands and feet in our patient, along with hyperhidrosis, tachycardia, and paresthesia, led us to believe that her condition was a variation of pink disease. The patient’s age at presentation (18 years) was unique, as it is atypical for pink disease. Although the polyarthropathy was attributed to Campylobacter, it is important to note that high levels of mercury exposure also have been associated with polyarthritis,⁸ polyneuropathy,⁴ and neuromuscular abnormalities on electromyography.⁴ Therefore, it is possible that the presence of these symptoms in our patient was either secondary to or compounded by mercury exposure.

Mercury Poisoning
Diagnosis of mercury poisoning can be made by assessing blood, urine, hair, or nail concentrations. However, as mercury deposits in multiple organs, individual concentrations do not correlate with total-body mercury levels.¹ Currently, no universal diagnostic criteria for mercury toxicity exist, though a provocation test with the chelating agent 2,3-dimercaptopropanesulfonate is considered reliable in assessing total-body mercury burden.¹

Elemental mercury, as found in some thermometers, dental amalgams, and electrical appliances (eg, certain switches, fluorescent light bulbs), can be converted to inorganic mercury in the body.⁹ Elemental mercury is vaporized at room temperature; the predominant route of exposure is by subsequent inhalation and lung absorbtion.¹⁰ Cutaneous absorption of high concentrations of elementary mercury in either liquid or vapor form may occur, though the rate is slow and absorption is poor. In cases of accidental exposure, contaminated clothing should be removed and immediately decontaminated or disposed. Exposed skin should be washed with a mild soap and water and rinsed thoroughly.¹⁰

The treatment of inorganic mercury poisoning is accomplished with the chelating agents succimer, dimercaptopropanesulfonate, dimercaprol, or D-penicillamine.¹ In symptomatic cases with high clinical suspicion, the first dose of chelation treatment should be initiated early without delay for laboratory confirmation, as treatment efficacy decreases with an increased interim between exposure and onset of chelation.¹¹ Combination chelation therapy also may be used in treatment. Plasma exchange or hemodialysis are treatment options for extreme, life-threatening cases.¹

Conclusion

Mercury exposure should be included in the differential diagnosis of patients presenting with a rash on the palms and soles, especially in young patients with systemic symptoms. A high level of suspicion and a thorough history can prevent a delay in treatment and an unnecessarily extensive and expensive workup. An emphasis on early diagnosis and treatment is important for optimal outcomes and can prevent the severe and potentially devastating consequences of mercury toxicity.