Meaning of ALLERGY (IMMEDIATE HYPERSENSITIVITY) in English

ALLERGY (IMMEDIATE HYPERSENSITIVITY)

an immune response to an antigen (allergen) that does not normally cause an adverse reaction (e.g., animal dander, pollen). Allergic reactions are mediated by the release of histamine by mast cells. Allergic symptoms may include runny nose (rhinitis), sneezing, skin rash, asthma or anaphylactic shock.

AIDS English Glossary.      Английский словарь СПИДа.