English noun: hypersensitivity reaction | |||
1. | hypersensitivity reaction (state) 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 | ||
Broader (hypernym) | hypersensitivity | ||
Narrower (hyponym) | allergic reaction, allergic rhinitis, allergy, anaphylaxis, hives, nettle rash, urticaria, urtication | ||