#allergy__allergic_reaction  hypersensitivity reaction to a particular allergen; symptoms can vary greatly in intensity
  supertype:  hypersensitivity_reaction  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
  subtype:  food_allergy  allergic reaction to a substance ingested in food
  subtype:  immediate_allergy__immediateallergy__atopy__atopicallergy__typeiallergicreaction  an allergic reaction that becomes apparent in a sensitized person only minutes after contact
  subtype:  serum_sickness__serum_disease  a delayed allergic reaction to the injection of an antiserum caused by an antibody reaction to an antigen in the donor serum
  subtype:  delayed_allergy__type_IV_allergic_reaction  an allergic reaction that becomes apparent only hours after contact

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