title: Urticaria and angioedema.
mesh_terms: D000707:Anaphylaxis / Q000276:immunology; D000799:Angioedema / Q000145:classification / Q000175:diagnosis / Q000235:genetics / Q000276:immunology*; D000818:Animals; D000941:Antigens; D002908:Chronic Disease; D003080:Cold Temperature; D003165:Complement System Proteins; D006636:Histamine Release / Q000187:drug effects; D006801:Humans; D006967:Hypersensitivity / Q000276:immunology; D008027:Light; D012882:Skin Tests; D014581:Urticaria / Q000145:classification / Q000209:etiology / Q000276:immunology*
chemical_list: D000941:Antigens; D003165:Complement System Proteins