- Hypersensitivity caused by exposure to a particular antigen (allergen) resulting in a marked increase in reactivity to that antigen on subsequent exposure, sometimes resulting in harmful immunologic consequences.
- That branch of medicine concerned with the study, diagnosis, and treatment of allergic manifestations.
- An acquired hypersensitivity to certain drugs and biologic materials.
Synonym(s): acquired sensitivity, induced sensitivity
[G. allos, other, + ergon, work]
See Also: allergic reaction, anaphylaxis, immune
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