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Pets, Dust May Worsen Ragweed Allergies
People who have hay fever and who also have an allergy to cats, dogs, dust mites, or grass pollen have hay fever symptoms that are more severe and occur earlier on, according to a new study.
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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.
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Common Treatments for Allergies
We separate fact from fiction about identifying allergy triggers and what you can do to stop them in their tracks.
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