Problem of cough. Problem permanently?

I have problem of cough since then when I was 15 years old. I used to have lots of sneezings , coughs and headaches.  Since then i have taken lots of medicines . Even had done nasal path wash therapy by a doctor . I have tried homeopathy too for sometimes. Once a doctor had adviced me that work the growing age the problem may get reduced due to increase in immunity. So after some years i left all treatments. Right now, i still have such problem of cough in nose though in some climate or environment it is not that much . I feel difficulties in complete breathing as repeatedly i have to clear my nose blockage. I want to start treatment which can cure it on permanent basis . But i am confused ,should i refer allopathy or homeopathy or ayurveda . As some says ailopathy won't cure the root . Please suggest me what should i do . If there is any operation required, will it solve the problem permanently ?