It is an inflammation of the mucous membranes lining the nose and sinuses and often increases after a cold or prolonged nasal congestion. It causes pain in the bones of the face and eyes and a headache, and is often accompanied by colored mucous secretions that come down from the front and back of the nose. The patient needs to take antibiotics and nasal drops with painkillers, and if the infection continues, there must be a local cause inside the nose, such as a deviated nasal septum, allergy, or a polyp inside the nose. In this case, the patient may need to undergo endoscopic surgery.