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Coronavirus (COVID-19) Updates

Brenner Children’s pediatric emergency department has moved back to its original location. Learn more

In order to help protect patients, family members and health care workers from the spread of COVID-19, no visitors are allowed at any of Wake Forest Baptist Health’s outpatient or inpatient facilities, except in certain situations.
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A to Z: Urticaria (Hives)

A to Z: Urticaria (Hives)

What's in this Article?

A to Z: Urticaria (Hives)

May also be called: Hives

Urticaria — commonly called hives — are red raised bumps or welts on the skin that can occur anywhere on the body, usually as a reaction to an allergen (something that causes an allergic reaction).

More to Know

The red welts of hives arise when mast cells in the bloodstream release the chemical histamine, which causes tiny blood vessels under the skin to leak. The hives can appear as small individual spots or large interconnected bumps.

Most often, hives are associated with an allergic reaction (to things like food, medications, pets, and insect bites), and can occur within minutes of exposure.

Keep in Mind

In many cases, mild hives won't require any treatment and will go away on their own. If itchiness is a problem, the doctor may recommend an antihistamine medication. If the trigger is identified, treatment includes avoiding it.

All A to Z dictionary entries are regularly reviewed by KidsHealth medical experts.