Hives are often caused when the body releases a chemical called histamine. Histamine is released during an allergic reaction. Many people, though, get hives without being exposed to something they are allergic to.
Acute urticaria. EBSCO DynaMed website. Available at: https://www.dynamed.com/condition/acute-urticaria. Accessed January 29, 2021.
Allergic skin conditions. American Academy of Allergy, Asthma & Immunology website. Available at: http://www.aaaai.org/conditions-and-treatments/library/at-a-glance/allergic-skin-conditions. Accessed January 29, 2021.
Chronic urticaria. EBSCO DynaMed website. Available at: https://www.dynamed.com/condition/chronic-urticaria. Accessed January 29, 2021.
Hives. American Academy of Dermatology website. Available at: https://www.aad.org/public/diseases/itchy-skin/hives. Accessed March 1, 2021.
Last reviewed January 2021 by
EBSCO Medical Review Board
Shawna Grubb, RN
Last Updated: 3/1/2021
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