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 ...

Learn when rashes signal medical emergencies. Color, location, and symptoms reveal dangerous conditions needing urgent care.

A doctor may also perform blood tests or skin tests to find out what may have caused your hives — especially if your hives were the result of an allergic reaction. You may not need prescription ...

When your skin is red, itchy, and irritated, it could be a rash or it might be hives. We spoke with experts to learn how to ...

Hives are swollen, pale red bumps ... making it hard to breathe. Allergic reactions, chemicals in foods, insect stings, sunlight, and medicines can make your body release a chemical called ...

A chemical rash often resembles a burn. It may present with swelling or blistering, or have oval-shaped flaky or dry patches. The allergic reaction is usually limited to the area of the skin that ...

The symptoms of drug-induced skin reactions can range from a mild itchy rash to more serious reactions, such as widespread blistering or anaphylaxis. Skin reactions may appear right away after ...

Skin reactions can be alarming, especially when they appear suddenly. Many people struggle to tell the difference between hives and a rash, but knowing the cause is the first step toward relief.

Aquagenic urticaria is the medical term for a water allergy. It makes showering painful and leads to skin reactions from ...

With temperatures warming up in Michigan, residents might want to take a swim, but that could leave you itching.

However, not all rashes are hives. "Rashes occur on the skin as a result of a compromised skin barrier, drug reactions, viral illness, contact dermatitis, and many more," says board-certified ...

and they could be a sign of a serious allergic reaction. Hives might not cause any discoloration on darker skin, so be alert for raised patches or welts—those could be a sign of urticaria.