Sinusitis

Sinusitis refers to inflammation of the sinus cavities, which are moist, hollow spaces in the bones of the skull. There are four pairs of sinuses:Frontal sinusesMaxillary sinusesEthmoid sinusesSphenoid sinuses (not shown in illustration)If the opening from a sinus cavity becomes plugged, the flow of mucus is blocked and pressure builds up, causing pain and inflammation.
Review Date: 04/21/2009
Reviewed By: Alan Lipkin, MD, Otolaryngologist, Private Practice, Denver,
Colorado. Review provided by VeriMed Healthcare Network. Also
reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.












