Urticaria Causes & Triggers

Urticaria, commonly known as hives, occurs when the body reacts to certain triggers, causing raised, itchy welts on the skin. Common causes include allergic reactions to foods (like nuts or shellfish), medications (such as antibiotics), insect stings, or physical factors like pressure or temperature changes. Stress and infections can also trigger hives in some individuals. In many cases, the exact cause may remain unknown. The body's immune response releases histamine, leading to the symptoms of urticaria. Proper identification and management of triggers can help prevent outbreaks and provide relief.