Allergies, also known as allergic diseases, are a number of conditions caused by hypersensitivity of the immune system to typically harmless substances in the environment. ... Metals and other substances may also cause problems. Food, insect stings, and medications are common causes of severe reactions.
Allergic reaction introduction BY Dr. Bipin kumar
Allergies, also known as allergic diseases, are a number of conditions caused by hypersensitivity of the immune system to typically harmless substances in the environment. ... Metals and other substances may also cause problems. Food, insect stings, and medications are common causes of severe reactions.
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