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Reaction vs Allergy - What's the difference?

reaction | allergy |

As nouns the difference between reaction and allergy

is that reaction is while allergy is (pathology|immunology) a disorder of the immune system causing adverse reactions to substances (allergens) not harmful to most and marked by the body's production of histamines and associated with atopy, anaphylaxis, and asthma.

reaction

English

Noun

(en noun)
  • An action or statement in response to a stimulus or other event
  • The announcement of the verdict brought a violent reaction .
    You were in the courtroom. What is your reaction ?
    When I last tried to eat strawberries I had a terrible allergic reaction .
  • (chemistry) A transformation in which one or more substances is converted into another by combination or decomposition
  • In this reaction , the acid and base will neutralize each other, producing a salt.

    allergy

    Noun

    (allergies)
  • (pathology, immunology) A disorder of the immune system causing adverse reactions to substances (allergens) not harmful to most and marked by the body's production of histamines and associated with atopy, anaphylaxis, and asthma.
  • (pathology) Any condition of hypersensitivity to a substance.
  • Altered susceptibility to a first treatment as exhibited in reaction to a subsequent one.
  • (informal) An antipathy, as toward a person or activity.
  • He has an allergy to reality TV.

    Synonyms

    * (disorder of the immune system) * (hypersensitivity) intolerance

    Hypernyms

    * (disorder of the immune system) hypersensitivity

    Derived terms

    * allergen * allergic * allergologist * allergology

    See also

    * ("allergy" on Wikipedia) * (Hypersensitivity)

    Anagrams

    * gallery, largely, regally