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An allergy is an abnormal immune response or increased sensitivity, to substances known as allergens which are usually proteins. Non-allergic triggers include temperature or barometric pressure changes or odors/irritants such as cleaning agents, fragrances/potpourris, tobacco smoke or vehicle exhaust to name a few. A person with allergies experiences symptoms when exposed to common allergens such as tree, grass, ragweed pollen, cats/dogs and dust mites that correlate with allergy testing. A non-allergic person would respond to irritants and weather changes and allergy testing would be negative. Both allergic and non-allergic rhinitis are very important conditions that need to be differentiated from one another as the treatment of these conditions is quite different from one another. (More)

Understanding Allergies

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  • Hives
  • House Dust Allergy
  • Ragweed Season Dilemma: Is it a Cold, Allergy or Sinusitis?
  • Summer Allergy Season
  • Allergic Rhinitis (Hay Fever)
  • Feather Allergies
  • Allergy to Animals
  • Cockroach Allergy and Avoidance
  • How to Avoid Molds
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  • Commonly Asked Questions

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    NetWellness Expert I Leonard Bernstein

    I Leonard Bernstein, MD
    University of Cincinnati

    Last Updated: Nov 16, 2015