A deviated Nasal septum occurs when the thin wall (nasal septum) between your nasal passages is displaced to one side. In many people, the nasal septum is off-center — or deviated — making one nasal passage smaller.

In many cases, there may be no symptoms. When symptoms occur, they include a congested nostril, nosebleeds and noisy breathing during sleep.

Symptoms:

Obstruction of one or both nostrils. This blockage (obstruction) can make it difficult to breathe through the nostril or nostrils. Nose bleeds. Facial pain. Noisy breathing during sleep. Awareness of the nasal cycle.

Preference for sleeping on a particular side