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ALLERGIES
60 MILLION PEOPLE IN THE U.S. SUFFER FROM ALLERGIES Allergies In General An allergy is an overreaction to substances the body thinks are foreign, such as pollen from plants, animal dander, or insect stings. People can develop allergies to foods and medications as well. Signs of allergies include runny nose, itchy nose or throat, itchy/watery eyes, and sneezing. Allergies can worsen asthma by narrowing your breathing tubes and can cause stomach cramping from increased mucus production and constriction of the intestinal walls. How Allergies Occur When a person is exposed to an allergen such as tree pollen, the body believes it is an “enemy” and releases antibodies to fight off the invader. These antibodies can release chemicals such as histamine which irritate the eyes, nose, and lungs. If enough antibodies build up over time, it triggers allergic symptoms. This is how people own a cat for many years without a problem then suddenly experience itching and sneezing around their pets. Wheezing occurs in patients with asthma who are allergic to the pollens of trees, weeds and grass; animals; molds; and house dust mites.
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