How can i get treated for chronic sinusitis?

There is no quickfix: Chronic sinusitis is usually treated surgically in combination with medicines. Usually it requires medical management over a long period of time and treating any associated causes like allergy and other inflammatory disorders in addition to culture directed antibiotics.

Complicated: Treatment for chronic sinusitis starts with maximum medical therapy. That is different for different doctors, but generally speaking, treatment with 3 to 4 weeks or antibiotics along with daily saline spray and steroid spray for 4 weeks, and poss. Decongestants, antihistamines as needed. If you fail maximum medical therapy, then a ct scan is indicated and possible sinus surgery based on results.