Hi Thank you for asking HCM I have gone through your query. Allergic rhinitis can cause recurrent nasal congestion and sinusitis. Antibiotics and nasal decongesants will help to get rid off it and regular taking of antihistamine like levocetirizine and mast cell stabilizer like monteleukast for long term will help to control allergic rhinitis. Endoscopic examination by an ENT specialist is well appreciated to rule out some obstruction or masses which can cause your condition and an endoscopic resection of it helps in such case also. Can you provide information about what your doctor has told you for the reason to do surgery? Let me know if anything not clear. I am happy to help you. Thanks.