hypersensitivity reaction

1. 1.

   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

   Broaderhypersensitivity

   Narrowerurticationallergyanaphylaxisallergic rhinitis

Questions about hypersensitivity reaction

What does hypersensitivity reaction mean?

hypersensitivity reaction means "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".

Is hypersensitivity reaction a common word?

hypersensitivity reaction is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.