type IV allergic reaction


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Noun1.type IV allergic reaction - an allergic reaction that becomes apparent only hours after contacttype IV allergic reaction - an allergic reaction that becomes apparent only hours after contact
allergic reaction, allergy - hypersensitivity reaction to a particular allergen; symptoms can vary greatly in intensity
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References in periodicals archive ?
Indeed, the maculopapular skin eruption, associated with the administration of amoxicillin in the course of infectious mononucleosis, is considered to represent a delayed-type hypersensitivity reaction (type IV allergic reaction).
Type IV allergic reaction is usually checked by patch test.
Several metals used in medical and dental care, such as nickel, gold, palladium, and mercury, can sensitize genetically predisposed individuals and induce a so-called Type IV allergic reaction. A Type IV allergy is mediated by T-lymphocytes that have had prior contact with the sensitizing allergen.