title: Contact allergy to 8-methyxypsoralen.
abstract: A 20-year-old male patient was treated topically with 8-methoxypsoralen and long-wave ultraviolet light (UV-A) for alopecia areata. He developed contact allergy to 8-methoxypsoralen after the sixth treatment (day 17), which was verified by patch testing and histopathology.
mesh_terms: D000328:Adult; D000506:Alopecia Areata / Q000188:drug therapy; D003877:Dermatitis, Contact / Q000175:diagnosis / Q000209:etiology*; D006801:Humans; D008297:Male; D008730:Methoxsalen / Q000009:adverse effects* / Q000627:therapeutic use; D010778:Photochemotherapy
chemical_list: D008730:Methoxsalen