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Ethmoiditis is an inflammation of the ethmoidal cells in the sinuses, the air-filled cavities behind the nose and between the eyes.

See also: Sinusitis


Ethmoid sinus infections are most commonly caused by bacteria, although fungi and viruses can play a role.


Symptoms usually include a headache between the eyes and a runny nose.

Symptoms of more serious infections can include loss of vision, double vision, or redness or bulging of the eyes (orbital cellulitis).



Benninger MS. The pathogenesis of rhinosinusitis. In: Flint PW, Haughey BH, Lund VJ, Niparko JK, Richardson MA, Robbins KT, Thomas JR, eds.Cummings Otolaryngology: Head & Neck Surgery

Borish L. Allergic rhinitis and sinusitis. In: Goldman L, Schafer AI, eds.Goldman's Cecil Medicine

Update Date 8/11/2013