Although acute urticaria is often caused by an allergy, chronic urticaria is now recognized as an autoimmune disease, usually caused by production of autoantibodies to IgE. Allergy tests are not indicated. Most patients will respond to antihistamines, although higher than usual doses may be required. For a recent review of the topic by Kolkhir et […] The post Chronic urticaria is an autoimmune disease first appeared on North West Allergy Network. The post Chronic urticaria is an autoimmune ...