
Urticaria Day (UDAY) 2026
AAFA joins We CU, Allergy & Asthma Network, and The Mast Cell Disease Society, Inc. (TMS) in recognizing Urticaria Day (UDAY) on October 1, 2026. What is urticaria (hives)? Hives (urticaria) are a type of swelling of the skin and are a common symptom of allergic reactions. Hives are itchy, raised bumps, called welts or […]








