Allergic contact urticaria to benzoyl peroxide.
After four months of use, a 13-year-old girl with acne developed allergic contact urticaria to 5 percent topical benzoyl peroxide. This was confirmed by closed patch tests. It is suggested that concomitant use of an abrasive scrub cleanser may have damaged the stratum corneum and initiated or enhanced sensitization.
D000152:Acne Vulgaris / Q000188:drug therapy; D000293:Adolescent; D001585:Benzoyl Peroxide / Q000009:adverse effects* / Q000276:immunology; D003877:Dermatitis, Contact; D005260:Female; D006801:Humans; D010545:Peroxides / Q000009:adverse effects*; D014581:Urticaria / Q000139:chemically induced* / Q000276:immunology
D010545:Peroxides; D001585:Benzoyl Peroxide