A large proportion of the worldwide populations suffer from allergic disease, allergic rhinitis and bronchial asthma being among the most common chronic disorders. These condition impact not only on economy of the worldwide public health but also on the mental, physical and financial status of people suffering from complication of these disorders. Allergic disease should be explored at the level of gene to molecular biology, cell biology, histopathology, symptoms and quality of life. The incidence of allergy is progressively increasing with modernization of life style.

By V. K. Jain and Anil Arora