An allergy is a disorder of the immune system that causes symptoms, such as sneezing, itchy and watery eyes, and a runny nose. Allergens are the stimuli that cause these allergy-related symptoms.
Take it Easy on Chemical Cleaners
Pay Attention to Air Pollution
Using a Nasal Spray for Allergies
Dining Out With Food Allergies
What's Polluting the Indoor Air?
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