Snoring is part of a spectrum of diseases that includes upper airway resistance syndrome and obstructive sleep apnea (OSA). Snoring is due to the vibration of the structures in the oral cavity and oropharynx. It usually bothers the spouse more than the patient. Due to poor sleep quality, fragmented sleep, intermittent nighttime hypoxemia, reduced percentage of slow-wave sleep, and increased sympathetic overdrive, obstructive sleep apnea results in daytime somnolence, morning headaches, poor concentration, loss of memory, frustration, depression, and even marital discord.