Anaphylaxis to diphenylcyclopropenone during sensitization for wart treatment—A case report

Diphenylcyclopropenone (DPCP) is a contact allergen used as immunotherapy for alopecia areata and refractory viral warts.1 Side effects include localized blistering, swelling, burning, and generalized urticaria.2 Only one case of probable anaphylaxis was briefly reported in an adult in 1988.3 This article reports a case of anaphylaxis to DPCP upon first application (sensitization stage) in a 7-year-old boy.