Chronic Sinusitis and Sinus Polyps:
If nothing works it could be Cold affecting your head!
Try wearing a warm cap on your head and don't allow your head to get cold! Also you can get a blow dryer and use warm air on your head and see if that gives you relief! I didn't have this problem when I was young, it happened when I hit my late 50's! I am back to normal knowing this cold can affect my sinuses! And once in awhile even the air-conditioner starts my sinuses up again, only I place a warm cap on my head and the sinus problem stops!
DON'T LET YOUR HEAD GET COLD! See if this helps!