LYCOS RETRIEVER 
Sinusitis
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Sinusitis... known as a sinus infection, is caused by inflammation and blockage of the sinus cavities. Sinuses are hollow pockets of air located on either side of the nose, behind and in-between the eyes, and in the forehead. The sinuses produce mucus that cleans and moistens the membranes of the nose and throat. Each sinus has an opening into the nose that allows for free exchange of mucus and air. Sinusitis occurs when these openings get plugged. As mucus and pressure build in the sinuses, a perfect breading ground for bacterial growth is produced.
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Sinusitis is more common in adults. It rarely occurs in children under the age of five. People with nasal abnormalities (such as deviated nasal septum), allergic rhinitis or cystic fibrosis are more likely to develop sinusitis. Smoking increases the risk of developing sinusitis.
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Sinusitis