Allergies and Hay Fever

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Allergies and Hay Fever Information from AAO-HNS

Allergy symptoms appear when the immune system reacts to an allergic substance that has entered the body as though it were an unwelcome invader. Learn more about how allergies develop from the American Academy of Otolaryngology-Head and Neck Surgery.

Tags: Allergies, Seasonal Allergy, Fever

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Most Recently Shared on October 17, 2011 at 10:20 pm By:

kfisher Kyle W. Fisher, MD

Allergy symptoms appear when the immune system reacts to an allergic substance that has entered the body as though it were an unwelcome invader. Learn more about how allergies develop from the American Academy of Otolaryngology-Head and Neck Surgery.

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Bobby Ghaheri, MD Bobby Ghaheri, MD

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