(HealthDay News) -- Hives are an allergic skin reaction caused by the body's release of histamine.
The American Academy of Allergy Asthma & Immunology mentions these common causes of hives:
- Exposure to an allergic trigger.
- Eating something that triggers an allergic reaction.
- Exercising, or exposure to heat.
- Being bitten by an insect.
- Having an allergic reaction to a medication.
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