Allergy
What Causes Allergies? About one out of every five Americans experience allergies, which are the result of your immune system responding in an overprotective manner to a harmless substance. Common allergens include: PollenMoldDust mitesPet danderFoodChemicalsEnvironmental irritantsInsect stings Explore Allergy Types What Are the Symptoms? Allergy symptoms typically involve the airways, sinuses, nasal passages and skin.…
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