Sinusitis is an inflammatory disorder of the soft tissue lining the sinuses.Generally sinuses are filled with air bur when sinuses become blocked and filled with fluids,germs (like bacteria, vituses )  can grow and cause infection.    condition that can cause sinus blockge are cold ,allergic rhinitis,nasal polyps or NSD.

types:  1. Acute sinusitis

2. Chronic sinusitis

3. recurrent sinusitis.

TREATMENT:

1 Saline nasal irrigation

2. nasal corticisteroids

3.oral or injected corticosteroids

4.Decongestants

5.antibiotics.