Ethmoiditis

Ethmoiditis is an infection of the ethmoidal cells in the sinuses. These are the air-filled spaces behind the nose and between the eyes.

Ethmoiditis is a type of sinusitis.

Sinuses

The sinuses are hollow cavities within the facial bones. Sinuses are not fully developed until after age 12. When people speak of sinus infections, they are most frequently referring to the maxillary and ethmoid sinuses.

Causes

Symptoms