Allergy (Immediate Hypersensitivity):SFAF
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.
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