Introduction: In India, approximately, 20% population suffers from allergic rhinitis, 6% from atopic eczema and 15% from bronchial asthma; hence allergic diseases worsen the quality of life, affect psychological well-being and incur significant health care cost and loss of productive work hours for the nation as a whole. As per one airway-one disease hypothesis, Air or Food borne allergens are one of the major factors which can cause and trigger nasobronchial allergy.