Hives, or urticaria, can occur for many reasons, such as exposure to an allergen or a physical trigger, like pressure from tight clothing. It may also indicate an infection or another underlying ...

Pressure urticaria is a type of chronic urticaria that causes recurring hives from pressure applied to your skin. It may be treated with a combination of trigger avoidance and medications. Better ...

Urticaria affects both children and adults, with chronic cases more common in women, and often presents in emergency or dermatology settings. Conditions like vasculitic urticaria, erythema multiforme, ...