What is an allergy? List the causes, symptoms and treatment options

Basic Clinical Laboratory Techniques 6E
6th Edition
ISBN:9781133893943
Author:ESTRIDGE
Publisher:ESTRIDGE
Chapter4: Basic Immunology And Immunohematology
Section4.2: Infectious Mononucleosis Tests
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What is an allergy? List the causes, symptoms and treatment options
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Allergy

Allergy is an unusual response or direct sensitization to a substance by a human body. 

Hypersensitivity

It is an exaggerated immune response produced by the body to the allergen or a foreign substance. These immune responses cause damage to the host cells.

Note :

  • Allergy is also called as a hypersensitivity reaction.
  • Hypersensitivity is used as a descriptive term in an immunological process.
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