Efficacy and Safety of Topical Corticosteroid Treatment under Occlusion for Severe Alopecia Areata in Children. A single-center retrospective analysis.

BACKGROUND:Alopecia areata (AA) has a poor clinical course in children. There are no reliable therapeutic options for children with severe AA, including alopecia totalis (AT) and alopecia universalis (AU). AIM:We evaluated the efficacy and adverse effects of a potent topical corticosteroid (TCS) under occlusion in pediatric patients with severe AA. METHODS:We reviewed records of 23 patients under the age of 10 years with AT or AU treated with a potent TCS (0.05% clobetasol propionate or 0.3% diflucortolone valerate) for 8 hours under occlusion with a plastic film. We used the Severity of Alopecia Tool (SALT) to measure clinical improvement. The primary endpoint was a Severity of Alopecia Tool (SALT) score of 20 or less at six months. We analyzed the change in cortisol levels to identify the long-term safety of TCS therapy on the hypothalamus-pituitary-adrenal axis. RESULTS:Nineteen patients reached SALT 20 or less at the 6-month treatment. Six patients relapsed over the 6-month follow-up period. Four patients were suspected of adrenal insufficiency. However, the cortisol level of the patients recovered to normal at least 1-month after lowering TCS potency or changing to non-steroidal treatments. LIMITATIONS:Retrospective design and small sample size. CONCLUSION:This study shows that a potent TCS occlusion may be a safe treatment option in pediatric patients with severe AA. Further long-term studies are required to evaluate the safety and recurrence of TCS occlusion therapy for pediatric AA.