2024年3月16日 · 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. Allergic reactions,...

Hives (also called urticaria) refers to raised and splotchy areas of skin that can be caused by an allergic reaction to something. Hives may go away on their own.

2023年7月18日 · 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.

2023年10月27日 · 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 and substances, including certain foods and medications. Angioedema can arise with hives or alone.

2022年9月12日 · Hives (also called urticaria) are itchy, red, and raised bumps on the skin. Hives can happen for several possible reasons, and they can also seem to appear without cause. Hives usually are not dangerous. They can be short term and disappear within a day, or they can last weeks or longer.

What causes hives? The often-itchy bumps and raised patches of hives develop when the body releases histamine. Your body stores histamine inside cells. When your immune system recognizes a threat, it releases histamine and other chemicals.

2024年1月3日 · Hives are raised, itchy bumps on the skin that can occur due to an allergen. Here are pictures of hives and their potential causes.

Hives, also known as urticaria, are red and sometimes itchy bumps on your skin. Learn about the hives symptoms, diagnosis and treatment here.

2025年2月5日 · Potential Causes Allergic Reactions . Around 20% of people will experience hives at some point in their lifetime, commonly caused by an allergic reaction. During an allergic reaction, your body releases chemicals called histamine into the blood. This is an immune system response resulting in swelling, itching, and other symptoms of hives.

Hives are raised, often itchy, red bumps (welts) on the surface of the skin. They can be an allergic reaction to food or medicine. They can also appear without cause. Urticaria - hives; Wheals. When you have an allergic reaction to a substance, your body releases histamine and other chemicals into the blood.