Hello. Thank you for asking at HCM. I went through your history. From your history, my opinion is as follows: 1. Allergies are due to some abnormal functioning of immune system and DNS (deviated nasal septum) is a physical/structural abnormality. Both are entirely different. 2. Nasal symptoms such as nasal obstruction can be caused by both DNS and long standing allergic rhinitis. Sinusitis can be caused by both DNS and long standing allergic rhinitis. 3. Mild DNS usually does not cause severe nose symptoms. Gross DNS (as in your case) can cause severe nose symptoms. 4. So surgical correction of gross DNS can improve your nose and sinus symptoms greatly, especially nasal obstructive symptoms. But it cannot cure allergies. To summarize in brief, as both are contributing to your symptoms, correction of one can improve your symptoms but I can not say DNS surgery can permanently cure allergies. Allergies is entirely different. For nose allergies, I would suggest you to consult an Allergist-Immunologist who will advise you allergy testing. This will help you knowing what substances you are allergic to and how to avoid them. An Allergist may also suggest you Allergen Specific Immunotherapy which works on your immune system to improve allergic symptoms on long term basis. An ENT surgeon is the best person to say how much improvement you can expect (it depends upon your severity of DNS as well as nasal examination) with DNS surgery. Hope above answer 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. Thank you & Regards.