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 information includes articles on allergies, symptoms, treatment, medications, food allergies, and allergy relief.

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 ...

An allergy is a hypersensitivity disorder of the immune system. Allergic reactions occur when a person's immune system reacts to normally harmless substances in the ...

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 ...

Allergies Definition. Allergies are abnormal reactions of the immune system that occur in response to otherwise harmless substances. Description

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.

Definition By Mayo Clinic staff. Allergies occur when your immune system reacts to a foreign substance such as pollen, bee venom or pet dander. Your immune system produces ...

A common trigger for allergies. See the entire definition of Mold. Mouth: 1. The upper opening of the digestive tract, beginning with the lips and containing the teeth, gums ...

a hypersensitivity to a specific substance (such as a food, pollen, dust, etc.) or condition (as heat or cold) which in similar amounts or degrees is harmless to most ...

Definition By Mayo Clinic staff. Food allergy is an immune system reaction that occurs soon after eating a certain food. Even a tiny amount of the allergy-causing food can ...

Hypersensitivity caused by exposure to a particular antigen (allergen) resulting in a marked increase in reactivity to that antigen on subsequent exposure, sometimes ...

allergen n. A substance, such as pollen, that causes an allergy. [German Allergen : Aller(gie) , allergy; see allergy

Define allergy in American English. What is allergy? allergy meaning and more by Macmillan Dictionary

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Definition and other additional information on Allergy from Biology-Online.org dictionary.

What is Allergy: Definition, Causes, Symptoms, Risk factors, Treatment

Definition of ALLERGIC. 1: of, relating to, affected with, or caused by allergy. 2: having an aversion <allergic to work> See allergic defined for English-language ...

Find dictionary definitions, audio pronunciations, and spellings for allergy in the free online American Heritage Dictionary on Yahoo! Education

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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My gluten allergy definition will help you understand this puzzling term and its relation to gluten intolerance and wheat allergies.

What is a skin allergy? A skin allergy is a reaction caused by a substance that comes in contact with the skin, thus a skin allergy. Some types of contact ...

Definition of Histamine from Your About.com Guide to Food Allergies

Allergy : (noun) 1: hypersensitivity reaction to a particular allergen; symptoms can vary greatly in intensity [syn: allergic reaction] Based on WordNet 2 ...

There is finally a sort of first-draft write-up for the food allergy definition on this website. It needs more work, but at least it is a start. The fact is that it ...

Definition of Peanut allergy medical terms terminology - Medical Dictionary Online