Hives are welts on the skin that often itch and can appear on any part of the body. Hives vary in size from very small to quite large and may eventually connect to form an even larger welt.

A hive often goes away within 24 hours or less. New hives may appear as old ones fade, so hives may last for a few days or longer. A bout of hives usually lasts less than 6 weeks. These hives are called acute hives. If hives last more than 6 weeks, they are called chronic hives.

Acute hives often result from an allergy, but they can have many other causes. Blood tests can be performed to determine allergies that may trigger hives. Schedule a consultation for evaluation of your hives.

If your hives are accompanied by throat swelling, difficulty breathing, itchy throat, swollen lips, or a severe rash, you should stop taking the medication, call 911 and go to an emergency room immediately.

Request an appointment with a dermatologist

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