Definition of ALLERGY. 1: altered bodily reactivity (as hypersensitivity) to an antigen in response to a first exposure <a bee venom allergy so severe that a second ...

noun, plural al·ler·gies. 1. an abnormal reaction of the body to a previously encountered allergen introduced by inhalation, ingestion, injection, or skin contact ...

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al·ler·gy (l r-j) n. pl. al·ler·gies. 1. An abnormally high sensitivity to certain substances, such as pollens, foods, or microorganisms. Common indications of ...

allergy /al·ler·gy/ (al´er-je) a hypersensitive state acquired through exposure to a particular allergen, reexposure bringing to light an altered capacity to react.

Allergy, allergy wikipedia allergy is an allergy an allergy is allergy sinusitis allergy shots allergy definition allergy in of allergy of allergy in allergy ...

allergen /al·ler·gen/ (al´er-jen) an antigenic substance capable of producing immediate hypersensitivity (allergy).allergen´ic. pollen allergen any protein ...

Definition of allergy from the Longman Online Dictionary of Contemporary English. The Longman English Dictionary provides support and resources for those who want to ...

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Definition of ALLERGEN: a substance (as pollen) that induces allergy — al·ler·gen·ic \ ˌ a-lər-ˈ je-nik\ adjective — al·ler·ge·nic·i·ty \ ˌ a-lər-jə ...

Back to TopCauses. Allergies are pretty common. Both genes and environmental factors play a role. The immune system normally protects the body against harmful ...

Translation of allergy on the Internet's leading Spanish English dictionary.

A doctor of medicine (MD) or doctor of osteopathy (DO) who has been specially trained to diagnose and treat allergic or immune disorders. Click on any of the choices ...

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An allergen is a medical word for anything that causes an allergic reaction.