Sinusitis is inflammation of the sinuses due to a bacterial, viral or fungal infection. An acute sinus infection usually occurs after an Upper Respiratory Infection (URI).

Causes:

After a viral infection, the sinuses can become infected with a secondary bacterial infection sometimes colonized by streptococci, pneumococci or staphylococci.

Signs and symptoms:

nasal congestion, nasal obstruction, fullness in the ears, pressure and pain on the face, headache, dizziness and sometimes a cough.

Diagnosis; physical exam, CT scan.