Five years ago, I had to undergo FESS because my forehead started swelling due to sinus infection. One year it was normal. After I get frequent headaches, pain all over the face ear. Whenever I seek medical help, it only  works for a week..like montecope tab. After the course it reoccurs..Now the symptoms are getting worse. Pain in spreading to the neck as well. Numbness in my head. Pain in ear.  They said it is because of allergies the sinusitis will come back again n again. Is there any permanent solution to this ?