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Allergic Conditions: Insect Sting Allergy Insect sting allergy occurs when the immune system overreacts to the venom injected by a stinging insect. After the first sting, the allergic person’s body produces an allergic substance called Immunoglobulin E (IgE) antibody, which reacts with the insect venom. The individual does not usually experience a severe allergic reaction from that first sting—but if he or she is stung again by an insect of the same or similar species, the insect venom interacts with the IgE antibody produced in response to the earlier sting. This triggers the release of histamine and other chemicals that cause allergic symptoms. For a small number of people with severe venom allergy, stings may be life-threatening. Severe allergic reactions to insect stings can involve many body organs and may develop rapidly. This reaction is called anaphylaxis. Resources about insect sting allergy: Please visit an allergist for more information on allergic disease and your individual medical condition. If you need to locate an allergist in your area, visit the Academy’s online Physician Referral Directory. |
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