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

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 ...

Sometimes they sting or hurt. In most cases, hives are caused by an allergic reaction to a medication or food or are a reaction to an irritant in the environment. In many cases, hives are an acute ...

The swelling that often comes with hives is called angioedema. Allergic reactions, chemicals in certain foods, insect stings, sunlight, and medications can cause hives. It's often impossible to ...

Discover the causes, symptoms, and treatment of food allergies, and learn how to manage them safely with expert tips on ...

Hives are usually caused by an allergic reaction where the immune system releases histamine in response to a trigger. "Common triggers include certain foods such as shellfish, nuts, and eggs ...

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.

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

Solar urticaria is a rare allergic reaction to sun exposure. The condition causes an itchy rash or hives that appear on any skin that has been exposed to the sun. The more skin that is exposed to ...

It looks almost exactly like regular hives but does not increase a person’s risk for anaphylaxis (i.e., a severe allergic reaction that causes difficulty breathing and swelling of the throat ...