Oct 14, 2022 · What are hives? Hives are raised red bumps (welts) or splotches on the skin. They’re a type of swelling on the surface of your skin and happen when your body has an allergic reaction. …

Mar 16, 2024 · Urticaria, also known as hives, is an outbreak of pale red bumps or welts on the skin that appear suddenly. The swelling that often comes with hives is called angioedema.

Jul 18, 2023 · Hives, or urticaria, are itchy, raised welts that are found on the skin. Hives are often caused by an allergic reaction. Learn the signs and how to identify them.

Feb 5, 2025 · Hives (urticaria) are a common skin reaction that causes bumps, raised patches, or both. Most people find relief with allergy medications and avoiding triggers.

Hives can appear anywhere on the surface of the skin. Whether the trigger is allergic or not, a complex release of inflammatory mediators, including histamine from cutaneous mast cells, results in fluid …

Oct 27, 2023 · Hives — also known as urticaria (ur-tih-KAR-e-uh) — is a skin reaction that causes itchy welts that range in size from small spots to large blotches. Hives can be triggered by many situations …

Jun 23, 2025 · Hives are raised, itchy bumps on the skin that can occur due to an allergen. Here are pictures of hives and their potential causes.

Dec 4, 2023 · Hives, also called urticaria, are a raised, itchy area of skin. Learn the types, causes, symptoms, diagnosis, treatment, and complications of hives, as well as see pictures of them.

May 30, 2024 · What are hives? Hives Hives are a skin reaction that causes bumps, raised patches, or both to suddenly appear. These bumps and patches often itch intensely. Most cases of hives are …

Aug 6, 2025 · Summary Hives are red and sometimes itchy bumps on your skin. An allergic reaction to a drug or food usually causes them. Allergic reactions cause your body to release chemicals that can …