Search Result：hypersensitivity reaction
hypersensitivity reaction 
(TTS Sound)
(TTS Sound)Overview of noun hypersensitivity_reaction
The noun hypersensitivity reaction has 1 sense
- 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)