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 happen when your immune system comes in contact with an allergen.

2023年7月18日 · Hives, also known as urticaria, are itchy, raised welts that are found on the skin. They’re usually red, pink, or flesh colored on lighter skin and may be flesh colored or slightly lighter or...

2024年3月16日 · 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.

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.

2024年10月1日 · Hives — also called urticaria (ur-tih-KAR-e-uh) — is a skin reaction that causes itchy welts. Chronic hives are welts that last for more than six weeks and return often over months or years. Often, the cause of chronic hives isn't clear.

Hives, or urticaria, is a form of skin rash with red, raised, itchy bumps. [1] They may also burn or sting. [2] 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 leakage from superficial blood ...

2 天之前 · Hives are little bumps caused by an immune system reaction. They can be short-term or chronic, and typically resolve on their own. Relief can be found from medications, anti-itch products, and at-home remedies. Avoiding triggers is a way to prevent hives. Some reactions can be serious. When in doubt, consult with a healthcare provider or ...

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

2024年5月30日 · 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 temporary and go away without treatment. When hives linger, a board-certified dermatologist can help prevent flare-ups. Are hives contagious? No, you cannot catch hives.

2023年12月4日 · 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.