is an inflammation or of the pockets on either side of and behind the nose. It is traditionally subdivided into acute , , and . It can be caused by bacteria, viruses, fungi (molds) and possibly by allergies. About 15-20 % of the has a (meaning lasting longer than 3 weeks). It can cause a tremendous amount of suffering. Acute is usually precipitated by an earlier upper respiratory tract , generally of viral origin. damaged tissues are then colonized by bacteria, most commonly , , catarrhalis and . , that persists for at least 3 weeks, affects an estimated 32 million people in the United States. Continue Reading…

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