What You Need to Know About Hives

Hives are one of the most common skin problems, and they can appear suddenly.

They usually show up as red or pink, slightly raised patches on the skin. These patches often itch and may change shape or size. One sign of hives is that they can disappear from one area and then appear elsewhere on the body.

Some people with hives also develop swelling of the lips, eyelids, or face. This swelling is called angioedema. In rare cases, hives can be serious. Anyone who has trouble breathing or swallowing, or who feels swelling in the throat, should seek medical attention right away.

Many things can trigger hives. Common causes include reactions to certain foods, medications, or insect bites. Stress, infections, cold, heat, and pressure on the skin can also lead to an outbreak. Sometimes, even after medical testing, the exact cause remains unknown.

The good news is that many cases of hives go away on their own. Some last only a few hours. Others may last for days or weeks. When hives continue for several months or years, they are known as chronic hives.

Treatment depends on the person and the cause. A doctor may recommend antihistamines to help control itching and swelling. Avoiding known triggers can also help reduce flare-ups. For example, if a certain food, medicine, or insect sting causes hives, avoiding that trigger may prevent future outbreaks.

Because hives can look like other skin conditions, it is important to get medical advice if they keep coming back, spread quickly, or cause swelling. A dermatologist or allergist can help identify potential causes and recommend appropriate treatment.

Hives are often uncomfortable but usually manageable. Knowing the symptoms, watching for warning signs, and getting help when needed can make a big difference.