title: Photo quiz. Chronic, papular rash that develops a wheal when rubbed.
authors.affiliation: University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA.
authors.forename: Edward L
authors.initials: EL
authors.lastname: Lain
authors.forename: Sylvia
authors.initials: S
authors.lastname: Hsu
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D011537:Pruritus / Q000209:etiology; D014582:Urticaria Pigmentosa / Q000175:diagnosis*