title: Trichotillomania associated with alopecia areata.
abstract: An 18-year-old woman had alopecia areata of two years' duration. Initially, the clinical findings were quite characteristic of alopecia areata; however, the hair that grew back into the areas of alopecia remained short and sparse. Histopathologic examination suggested trichotillomania, which was confirmed by shaving a small area on the scalp and observing normal hair regrowth.
mesh_terms: D000293:Adolescent; D000506:Alopecia Areata / Q000175:diagnosis / Q000209:etiology* / Q000628:therapy; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D009771:Obsessive-Compulsive Disorder / Q000150:complications*; D014256:Trichotillomania / Q000150:complications*