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Allergies Health Center

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Allergies Overview

At least one out of every 5 Americans suffers from allergies. Common causes of allergy symptoms include food allergies such as peanut allergy or milk allergy, and seasonal allergies resulting from grass, weed, tree pollen, or various molds. Cat allergies and dog allergies can also cause miserable symptoms such as itchy eyes, sneezing, nasal congestion, and wheezing. Allergic skin conditions can cause a rash and itchy skin.

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FDA: Some Zicam Cold Remedies May Affect Sense of Smell

The FDA today advised people not to use Zicam intranasal products that contain zinc, due to the risk of anosmia (loss of the sense of smell), which may be long-lasting or permanent.

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Allergy Basics

What Is an Allergy?

Allergies are an abnormal response of the immune system. People who have allergies have an immune system that reacts to a usually harmless substance in the environment. This substance (pollen, mold, animal dander, etc.) is called an allergen.

Allergies are a very common problem, affecting at least two out of every 10 Americans.

Allergy-Proof Your House

Tips for keeping your home clean, green and allergy-free.

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