Hi, Noted your short history about suffering from polysinusitis, wants to know further whether this is treatable and curable. Poly-sinusitis means most of your para-nasal sinuses are partially or fully involved, your CT scan report would have helped me more. To answer your queries one by one: This is curable by all means due to better understanding of the disease, better medical and surgical treatment. Headache can most probably due to blocked opening of hte sinuses. After CT scan and some blood tests it an be known whether this is due to allergy or anything else like fungal infection and so on can tell the outcome. Consult an ENT Surgeon well versed with sinusitis problems for proper diagnosis and proper management. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. T. Chandrakant, ENT and General Surgeon