Hello Shruti, Thank you for asking at HCM. I went through your history and would like to make suggestions for you as follows: 1. Were I treating you, I would suggest you intranasal corticosteroids (mometasone or fluticasone) and montelukast for at least 4 weeks. 2. I would also suggest you regular steam inhalation and nose irrigation with saline which will help in nose obstruction symptoms. 3. An allergy test to common allergens - house dust mites, indoor molds, common pollens, insect proteins, pet danders (if you have pets) will help you identify the allergy causing substances and also to know the measures to avoid them. 4. Based on allergy testing, an Allergist-Immunologist may prescribe you allergen specific immunotherapy which gradually improve allergies by working like vaccines. 5. I would also suggest you regular breathing exercises like Yoga & Pranayama and a healthy, light & nutritious diet which will improve your lung capacity and immunity respectively in a long run. 6. In general, please avoid exposure to dusts, smokes and air pollution as much as possible. As you have asked about treatment in Delhi, I would think that a team approach with an ENT surgeon (as you have DNS also) and an Allergist will be helpful. There are many good allergists and ENT surgeons in Delhi, VP Chest Institute has a department dealing with allergies. Cost will actually depend on your final diagnosis and treatment, so it is actually difficult to predict at present. Hope above suggestions and information will be helpful to you. Should you have any further query, please feel free to ask at HCM. Wish you the best of the health ahead. Thank you & Regards.