title: Contact urticaria provoked by balsam of Peru.
abstract: Six patients with chronic urticaria are described in whom immediate type hypersensitivity to balsam of Peru was proven by patch test.
mesh_terms: D000328:Adult; D000707:Anaphylaxis / Q000139:chemically induced; D000799:Angioedema / Q000139:chemically induced; D001453:Balsams / Q000009:adverse effects*; D002935:Cinnamomum zeylanicum / Q000009:adverse effects; D003877:Dermatitis, Contact / Q000175:diagnosis / Q000209:etiology*; D005260:Female; D005767:Gastrointestinal Diseases / Q000139:chemically induced; D006801:Humans; D008297:Male; D008875:Middle Aged; D010328:Patch Tests; D014581:Urticaria / Q000139:chemically induced*
chemical_list: D001453:Balsams