A nasal obstruction is anything that impedes the flow of air into and out of the nose. A nasal obstruction may block one or both of the nasal passages.

Causes of nasal obstructions

Most cases of nasal obstruction are temporary, caused by sinusitis or allergies. The blockage may also be caused by an anatomical factor, such as a deviated septum, enlarged adenoids, nasal polyps, turbinate bones, or foreign objects.

Treatment for nasal obstructions

Nasal surgery may be necessary to improve both form and function.