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What are allergies and what causes allergies?

April 26, 2017allergies causes

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What are allergies and what causes allergies?

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A. When your body comes in contact with certain substances, or allergens, your immune system may overreact and cause you to have a reaction, like sneezing or itchy eyes, nose and throat. Allergens include dust mites, pet dander, mold spores and pollen.