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Allergy can be of two types, i.e. seasonal allergy and all-time allergy. The seasonal allergy is generally occurred in a specific season. In some particular season the pollens from the trees, grasses, weeds are commonly being more exposed than other seasons. Some persons who are allergic to those pollens, grasses, weeds react abnormally and develop the allergic symptoms. There are other groups of hypersensitive peoples who react vigorously to the indoor substances like dust mites, mold, cockroaches, animal dander and develop allergic reaction. Even many drugs, climacteric factors, psychological factors also creates allergic induced asthmatic condition to those person.