hypersensitivity reaction

Noun hypersensitivity reaction has 1 sense

• hypersensitivity reaction(n = noun.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;
has particulars: hives, nettle rash, urticaria, urtication, allergic reaction, allergy, anaphylaxis, allergic rhinitis
is a kind of hypersensitivity