- an abnormal reaction of the body to a previously encountered allergen introduced by inhalation, ingestion, injection, or skin contact, often manifested by itchy eyes, runny nose, wheezing, skin rash, or diarrhea.
- hypersensitivity to the reintroduction of an allergen.Compare anaphylaxis.
- Informal. a strong dislike or aversion, as toward a person or activity: He has an allergy to hard work.
Origin of allergy
Examples from the Web for allergy
Or perhaps all this allergy business is just that: a business.
(Though in keeping with the American obsession for these things May is designated as Allergy & Asthma Awareness Month).
Was it an allergy to opera or was it simply this burning desire to work for the church?John Eliot Gardiner Discusses His Monumental Bach Biography
November 10, 2013
No allergy case has been reported, and no other medical situation due to the use of mites has been revealed.U.S. Wants Freedom from ‘Filthy’ French Cheese
Alice Guilhamon, Christopher Dickey
July 20, 2013
Nor do I have an allergy—not one that's been diagnosed anyways!When Going Gluten-Free Is Dangerous
January 26, 2013
Two temporary exhibits on allergy and surgical dressings were installed in the gallery.History of the Division of Medical Sciences
Sami Khalaf Hamarneh
- a hypersensitivity to a substance that causes the body to react to any contact with that substance. Hay fever is an allergic reaction to pollen
- informal aversionhe has an allergy to studying
Word Origin and History for allergy
- An abnormally high acquired sensitivity to certain substances, such as drugs, pollens, or microorganisms, that may include such symptoms as sneezing, itching, and skin rashes.
- An abnormally high immunologic sensitivity to certain stimuli such as drugs, foods, environmental irritants, microorganisms, or physical conditions, such as temperature extremes. These stimuli act as antigens, provoking an immunological response involving the release of inflammatory substances, such as histamine, in the body. Allergies may be innate or acquired in genetically predisposed individuals. Common symptoms include sneezing, itching, and skin rashes, though in some individuals symptoms can be severe. See also anaphylactic shock.
A highly sensitive reaction of the body to certain substances, such as pollen, that are present in amounts that do not affect most people. Common indications of allergy include sneezing, skin rashes, itching, and runny nose.