title: Solar urticaria: a case with increased skin mast cells and good therapeutic response to an antihistamine.
abstract: A 45-year-old woman with solar urticaria is described. She was found to have: (a) increase of skin mast cells; (b) a good therapeutic response to hydroxyzine hydrochloride; (c) frequent peptic ulcers of the stomach; (d) antinuclear IgM antibodies in a titre of 1 : 1 000; (e) cold urticaria and dermographism; (f) anamnestically, suppression of the solar urticaria by a sequential oral contraceptive.
mesh_terms: D000328:Adult; D005260:Female; D006634:Histamine H1 Antagonists / Q000627:therapeutic use; D006801:Humans; D006919:Hydroxyzine / Q000627:therapeutic use; D008407:Mast Cells / Q000473:pathology; D012867:Skin / Q000473:pathology; D013472:Sunlight; D014581:Urticaria / Q000188:drug therapy / Q000209:etiology* / Q000473:pathology
chemical_list: D006634:Histamine H1 Antagonists; D006919:Hydroxyzine