AllergyWordNet Explorer

hypersensitivity reaction to a particular allergen; symptoms can vary greatly in intensity

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

allergic reaction to a substance ingested in food

an allergic reaction that becomes apparent in a sensitized person only minutes after contact

a delayed allergic reaction to the injection of an antiserum caused by an antibody reaction to an antigen in the donor serum

an allergic reaction that becomes apparent only hours after contact