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

n. , pl. , -gies . An abnormally high sensitivity to certain substances, such as pollens, foods, or microorganisms. Common indications of allergy may include sneezing ...

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 ...

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 ...

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

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

n. A substance, such as pollen, that causes an allergy. [German Allergen : Aller(gie) , allergy; see allergy + -gen , -gen (from French -gène ; see -gen ...

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 ...

It is a non-IgE mediated food allergy by definition. Irritable bowel syndrome (IBS) C1 esterase inhibitor deficiency (hereditary angioedema); this rare disease generally ...

History . The term and concept of "allergy" were coined by Viennese pediatrician Baron Clemens von Pirquet in 1906. He observed that the symptoms of some of his ...

An allergy is an abnormal immune system reaction to something that doesn't affect most other people. If you're allergic to a substance, your immune system mistakenly ...

Allergies are an unfortunate fact of life for many people, affecting them in a variety of unpleasant ways. Allergens are at the core cause of allergic reactions ...

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 ...

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, hypersensitive reaction of the body tissues of certain individuals to certain substances that, in similar amounts and circumstances, are innocuous to other ...