Definition of Allergy

1. Noun. Hypersensitivity reaction to a particular allergen; symptoms can vary greatly in intensity.


Definition of Allergy

1. Noun. (pathology immunology) A disorder of the immune system causing adverse reactions to substances (allergens) not harmful to most and marked by the body's production of histamines and associated with atopy, anaphylaxis, and asthma. ¹

2. Noun. (pathology) Any condition of hypersensitivity to a substance. ¹

3. Noun. Altered susceptibility to a first treatment as exhibited in reaction to a subsequent one. ¹

4. Noun. (informal) An antipathy, as toward a person or activity. ¹

¹ Source: wiktionary.com

Definition of Allergy

1. a state of hypersensitive reaction to certain things [n -GIES]

Medical Definition of Allergy

1. 1. A state of hypersensitivity induced by exposure to a particular antigen (allergen) resulting in harmful immunologic reactions on subsequent exposures, the term is usually used to refer to hypersensitivity to an environmental antigen (atopic allergy or contact dermatitis) or to drug allergy. The original meaning, now obsolete, included all states of altered immunologic reactivity, immunity as well as hypersensitivity. Gell and Coombs used the term allergic reaction to mean any harmful immunologic reaction causing tissue injury. 2. The medical specialty dealing with diagnosis and treatment of allergic disorders. (18 Nov 1997)

Lexicographical Neighbors of Allergy

allergically
allergics
allergies
allergin
allergins
allergised
allergist
allergists
allergization
allergological
allergologies
allergologist
allergologists
allergology
allergosis
allergy (current term)
allergy and immunology
allergy desensitization
allergy diet
allergy shots
allergy skin test
allergy testing
allergylike
allerion
allerions
alles anderes ist Menschenwerk
allesthesia
allethrin
allethrins
allethrolone

Literary usage of Allergy

Below you will find example usage of this term as found in modern and/or classical literature:

1. Otitis Media with Effusion in Young Children: Clinical Practice Guideline by Sylvan E. Stool (1998)
"However, they found that in a number of other studies allergy was shown to be of ... The Panel examined 22 articles in its initial review of allergy and ..."

2. Latex Allergies and the Health Care Industry by Charlie Norwood (2000)
"PREVALENCE OF LATEX allergy AMONG ANESTHESIOLOGISTS uofl ... Hsieh KH: Latex allergy in hospital employees. J Formes Med Assoc 1997; 96:266- 71 27. ..."

3. Understanding the Immune System by Lydia Woods Schindler (1994)
"Disorders of the Immune System allergy Recent research, benefiting from the ... The first time an allergy-prone person is exposed to an allergen, ..."

4. Microbes and Men by Robert Tuttle Morris (1915)
"Then again, immunity can be produced against the causes of allergy ... When speaking of allergy we refer to a condition of cell protoplasm due to ..."

5. Monographic Medicine by Albion Walter Hewlett, Henry Leopold Elsner (1916)
"Characters of allergy, and Symptoms of Anaphylactic Reaction The three main characteristics of the allergic change are (1) shortened incubation period, ..."

6. Spread of AIDS in the Developing World: Hearing Before the Committee on edited by Benjamin A. Gilman (2000)
"Since 1968, he has served the National Institutes of Health and is the current Director of allergy and Infectious Diseases. Dr. Fauci, we welcome you to the ..."

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