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Hay Fever : Causes

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Causes Overview Articles

Allergic rhinitis
An allergen is something that triggers an allergy. When a person with allergic rhinitis breathes in an allergen such as pollen or dust, the body releases chemicals, including histamine.
Source:ADAM
Date:January 9, 2009
Hay Fever
The diagnosis of hay fever is usually simple. A thorough history of the illness is important in diagnosing allergies, including whether the symptoms vary according to time of day or the season, and possible exposures.
Source:Gale Encyclopedia of Alternative Medicine
Allergic Rhinitis
Allergic rhinitis is a type of immune reaction. Normally, the immune system responds to foreign microorganisms, or particles, like pollen or dust, by producing specific proteins, called antibodies, that are capable of binding to identifying molecu...
Source:Gale Encyclopedia of Medicine
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