What causes snoring and sleep apnea?

Snoring is caused by abnormal movement of the structures located at the back of the mouth. The annoying harsh sound results from vibration of the soft palate, particularly the free margin of the soft palate including the uvula. Snoring is worse if the oral airway is narrow due to enlarged tonsils and tongue, one may also experience breathing problems during sleep, this is a sleep disorder calledsleep apnea.

These sleep disorder are more severe when there is nasal obstruction due to nasal allergy or previous nasal injury. Nasal obstruction changes the air flow across the soft palate and increases snoring.

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