Sinusitis is an inflammation, or swelling, of the tissue lining the sinuses. Sinuses are hollow spaces within the bones between your eyes, behind your cheekbones, and in your forehead. They make mucus, which keeps the inside of your nose moist. That, in turn, helps protect against dust, allergens, and pollutants.
Conditions that can cause sinus blockage include:
- The common cold
- Allergic rhinitis, which is swelling of the lining of the nose caused by allergens
- Small growths in the lining of the nose called nasal polyps
- A deviated septum, which is a shift in the nasal cavity

SYMPTOMS OF SINUSITIS
- Congestion in nose, difficulty in breathing.
- Ear pain
- Nausea
- Change in voice
