Mediwin Hospitals, Hyderabad. About half the patients who visit the out-patient department have complaints such as a nasal block, a heaviness in the head or even headaches. Most patients specify that they have a sinus problem.
Sinuses are air-filled spaces in the skull around the nose.
Hence they are called paranasal sinuses. They may also not have any function at all. All the sinuses open into the nasal cavity through small openings call Ostia. In cities because of atmospheric pollution, weather patterns and allergic reaction, sinus related problems are common. Normally, the mucosa line the nose and paranasal sinuses and there is a minimal amount of secretion.