Allergy desensitization: Stimulation of the immune system with gradually increasing doses of the substances to which a person is allergic in order to modify or stop the allergic response. This form of treatment is very effective for allergies to pollen, mites, animal dander, and stinging insects, including bees, hornets, yellow jackets, wasps, velvet ants, fire ants, and certain necessary medications.
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Last Editorial Review: 5/13/2016