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URL of this page: //medlineplus.gov/ency/imagepages/19333.htm

Histamine is released

Histamine is released

Overview

Mast cells release histamine when an allergen is encountered. The histamine response can produce sneezing, itching, hives and watery eyes.

Review Date 5/20/2024

Updated by: Jacob Berman, MD, MPH, Clinical Assistant Professor of Medicine, Division of General Internal Medicine, University of Washington School of Medicine, Seattle, WA. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.