hypersensitivity

https://doi.org/10.1351/goldbook.13241
State in which an individual reacts with allergic effects following exposure to a certain substance (allergen) after having been exposed previously to the same substance. It is sometimes used loosely for any increased response.
Note: Four types of hypersensitivity are recognized. Most common chemically induced allergies are type I [immunoglobulin E- (IgE-) mediated] and type IV (cell-mediated) hypersensitivity.
See also: allergy, Gell and Coombs classification
Source:
PAC, 2012, 84, 1113. (IUPAC glossary of terms used in immunotoxicology (IUPAC Recommendations 2012)) on page 1180 [Terms] [Paper]
Citation: 'hypersensitivity' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.13241 RIS BibTex EndNote
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