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hypersensitivity reaction

   Also found in: Medical, Legal, Financial, Encyclopedia, Wikipedia 0.01 sec.
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Noun1.hypersensitivity reaction - an inappropriate and excessive reaction to an allergen (as pollen or dust or animal hair or certain foods); severity ranges from mild allergy to severe systemic reactions leading to anaphylactic shock
hives, nettle rash, urticaria, urtication - an itchy skin eruption characterized by weals with pale interiors and well-defined red margins; usually the result of an allergic response to insect bites or food or drugs
allergic reaction, allergy - hypersensitivity reaction to a particular allergen; symptoms can vary greatly in intensity
anaphylaxis - hypersensitivity reaction to the ingestion or injection of a substance (a protein or drug) resulting from prior contact with a substance
hypersensitivity - pathological sensitivity
allergic rhinitis - rhinitis caused by an allergic reaction


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Significantly more women had hypersensitivity reactions.
An immediate hypersensitivity reaction generally occurs within five to 15 minutes after exposure to the offending antigen.
They may be due to hypersensitivity reactions or immunological reactions.
 
 
 
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