title: Unusual presentation of acute annular urticaria: a case report.
abstract: Acute urticarial lesions may display central clearing with ecchymotic or haemorrhagic hue, often misdiagnosed as erythema multiforme, serum-sickness-like reactions, or urticarial vasculitis. We report a case of acute annular urticaria with unusual presentation occurring in a 20-month-old child to emphasize the distinctive morphologic manifestations in a single disease. Clinicians who care for children should be able to differentiate acute urticaria from its clinical mimics. A directed history and physical examination can reliably orientate necessary diagnostic testing and allow for appropriate treatment.
authors.affiliation: Epicentre, 75011 Paris, France ; Agence de Santé, Mata Utu, 986 Wallis, France.
authors.forename: Gilles
authors.initials: G
authors.lastname: Guerrier
authors.forename: Jean-Marc
authors.initials: JM
authors.lastname: Daronat
authors.forename: Roger
authors.initials: R
authors.lastname: Deltour