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How do antihistamines relieve itch?

Typically, an antihistamine is used to relieve itching that is caused by the release of histamines in the body in response to an allergen. Antihistamines stop histamines from attaching to cells and from causing those cells to leak irritating fluids. In this way, antihistamines help to control itch.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.