hypersensitivity reaction
1.
(
noun
) 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
Related Words:
allergic reaction
,
allergic rhinitis
,
allergy
,
anaphylaxis
,
hives
,
hypersensitivity
,
nettle rash
,
urticaria
,
urtication
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