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. Allergic reactions …

Dec 8, 2025 · Hives, also known as urticaria, are raised, itchy welts on your skin that occur due to an allergen. The reaction is uncomfortable, but it’s often not serious.

Mar 16, 2024 · Hives are itchy welts that can appear anywhere on your skin and sometimes last minutes or days. They may be a sign of serious issues, especially if you have trouble breathing.

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.

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 …

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 …

Oct 3, 2025 · Hives (urticaria) cause symptoms like bumps (wheals) on your skin, as well as swelling and itchiness. It can affect your face, lips, limbs, or genitals.

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 …

4 days ago · Cold urticaria is a skin condition where you break out into hives from cold exposure. Doctors explain why it happens, how it's diagnosed, and how to manage it.