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Sinusitis - Introduction
Definition:It is defined as an inflammation of the mucous membranes of the paranasal sinuses that occurs in three stages: acute, subacute, and chronic". Sinuses are the hollow spaces in the bone of the cheeks and forehead.The sinuses are directly connected to the nasal cavities. Sinusitis, occurs if one or more of the defense processes or factors are amiss and bacterial growth occurs in the paranasal sinuses. This is generally caused by a viral, bacterial, or fungal infection . It is the most common problem of the respiratory (breathing) system. It can affect people of any age, although children have very small or non-existent sinuses until the age of around five or six. The inflammation of the nasal sinuses is usually triggered by inadequate draining due to allergies, infections or structural problems of the nose such as narrow drainage passages or a deviated septum.
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