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Nasal Allergies : Causes

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Causes could include:
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
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.
Source:Gale Encyclopedia of Children's Health
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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