title: Fixed solar urticaria with delayed onset.
abstract: Fixed solar urticaria (FSU) is an extremely rare type of solar urticaria characterized by urticarial wheals appearing frequently confined to fixed areas of the skin. After a few minutes of exposure to sunlight or other sources of radiation, urticarial lesions can usually be induced exclusively in the same localization. We report a case of delayed onset FSU occurring 6 hours after exposure to ultraviolet A and B light.
authors.affiliation: Department of Dermatology, University of Duesseldorf, Duesseldorf, Germany. ulf.wessendorf@med.uni-duesseldorf.de
authors.forename: Ulf
authors.initials: U
authors.lastname: Wessendorf
authors.forename: Sandra
authors.initials: S
authors.lastname: Hanneken
authors.forename: Merle
authors.initials: M
authors.lastname: Haust
authors.forename: Norbert J
authors.initials: NJ
authors.lastname: Neumann
mesh_terms: D000328:Adult; D006801:Humans; D008297:Male; D013997:Time Factors; D014466:Ultraviolet Rays / Q000009:adverse effects*; D014581:Urticaria / Q000209:etiology* / Q000473:pathology