Sinusitis

Sinusitis generally refers to inflammation of mucous membranes of the panasal sinuses, which are bone cavities located in the skull near the nose. They include the frontal sinuses, located above the orbits of the eyes; the maxillary sinuses, located in the cheekbones; and the ethmoid and sphenoid sinuses, located behind the nose. All of these sinuses drain mucus into the nose sults from an