Allergies

Allergy is a type of hypersensitivity reaction to a particular substance known as allergen. Hypersensitivity reaction is an unusual response by the immune system inside the body. Person who are more sensitive to a particular substance, have their immune system triggered by a substance that usually does no harm to common people. Substances like pollen, mold, and animal dander are some of the most common allergens known. Allergies are a very common problem, affecting many people. Read More