title: Clinical pearl: diascopy helps diagnose urticarial vasculitis.
authors.affiliation: University of Minnesota Medical School, Minneapolis.
authors.forename: M V
authors.initials: MV
authors.lastname: Dahl
mesh_terms: D003937:Diagnosis, Differential; D006801:Humans; D008722:Methods; D017445:Skin Diseases, Vascular / Q000175:diagnosis*; D014581:Urticaria / Q000175:diagnosis*; D014657:Vasculitis / Q000175:diagnosis