Allergen

View 10 Common Allergy Triggers

Medical Definition of Allergen

Allergen: A substance that can cause an allergic reaction. Common allergens include ragweed pollen, animal dander, and mold.


Quick GuideCould I Be Allergic? Discover Your Allergy Triggers

Could I Be Allergic? Discover Your Allergy Triggers

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Reviewed on 3/19/2012

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