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Positive reaction to allergen
Positive reaction to allergen

Allergen

Definition:

An allergen is a substance that can cause an allergic reaction. Allergens are substances that, in some people, the immune system recognizes as "foreign" or "dangerous" but cause no response for most people.



Information:

Common allergens include:

  • chemicals and plants
  • drugs (such as antibiotics, serums)
  • foods (such as milk, chocolate, strawberries, wheat)
  • infectious bacteria, viruses, and animal parasites
  • inhalants (such as dust, pollen, perfumes, smoke)
  • physical agents (such as heat, light, friction, radiation)

See also:




Review Date: 2/7/2005
Reviewed By: Frederic F. Little, M.D., Department of Allergy and Pulmonary/Critical Care Medicine, Boston University School of Medicine, Boston, MA. Review provided by VeriMed Healthcare Network.

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