Sinusitis

Introduction

Sinusitis is a common problem caused by acute or chronic inflammation of the paranasal sinuses. The paranasal sinuses are aerated cavities in the bones of the face that develop from the nasal cavity and maintain communication with it. The main sinuses are the maxillary, the frontal, the ethmoid, and the sphenoid sinuses. Maxillary sinusitis is the most common type of sinusitis. The ethmoid, frontal and sphenoid sinuses are affected less frequently.