Sinusitis
HEALTH GUIDE REFERENCE FROM A.D.A.M
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 sinuses
- Maxillary sinuses
- Ethmoid sinuses
- Sphenoid 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:
8/31/2007
Reviewed By:
Harvey Simon, MD, Editor-in-Chief; Associate Professor of Medicine, Harvard Medical School; Physician, Massachusetts General Hospital.
8/31/2007
Reviewed By:
Harvey Simon, MD, Editor-in-Chief; Associate Professor of Medicine, Harvard Medical School; Physician, Massachusetts General Hospital.
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