title: Challenge test battery in chronic urticaria.
abstract: The use of a battery of challenge tests in the routine investigations of patients with chronic urticaria has an important place, demonstrating an exacerbating factor in over half the patients. Diets designed to reduce the ingestion of the substances concerned are associated with clearing or considerable improvements in 75% of the patients treated.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001241:Aspirin / Q000009:adverse effects; D001391:Azo Compounds / Q000009:adverse effects; D001557:Benzenesulfonates / Q000009:adverse effects; D001565:Benzoates / Q000009:adverse effects; D002648:Child; D002675:Child, Preschool; D002908:Chronic Disease; D006801:Humans; D062385:Hydroxybenzoates / Q000009:adverse effects; D008875:Middle Aged; D010406:Penicillins / Q000009:adverse effects; D014581:Urticaria / Q000139:chemically induced / Q000175:diagnosis* / Q000178:diet therapy; D015002:Yeast, Dried / Q000009:adverse effects
chemical_list: D001391:Azo Compounds; D001557:Benzenesulfonates; D001565:Benzoates; D062385:Hydroxybenzoates; D010406:Penicillins; D001241:Aspirin