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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, often ...

An allergy is a sensitivity to a specific substance which causes a negative bodily reaction, such as sneezing, wheezing, itching or difficulty breathing.

MDGuidelines is the most trusted source of clinical information on definition for allergy.

allergy definition, meaning, English dictionary, synonym, see also 'System.Collections.ArrayList', Collins Reverso dictionary, English definition, English vocabulary

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 may ...

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

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

Food intolerance is a general term. While symptoms may be similar among food intolerances, testing, treatment and risks vary. For example, both a gluten allergy and celiac ...

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

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 environment.

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

Allergy definition. Allergy - an abnormal sensitivity to an ordinarily harmless substance, called an ALLERGEN, that produces a HYPERSENSITIVITY REACTION (allergic reaction) in ...

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

Definition of Allergy from Your About.Com Guide to Food Allergies