Obstructive sleep apnea
Obstructive sleep apnea is a common disorder that can be very serious. It is the cessation of breathing that occurs during sleep. Usually, it is due to physical airway obstruction by the tissues surrounding and in the airway at some point between the nostrils and the larynx (voice box). The places where airway obstruction happens may be one or a combination of several.
Learn more at the New York Head and Neck Institute.