Sleep Apnea Periodic obstruction to airflow occurring during sleep and caused by abnormalities of the soft tissues of the mouth and throat resulting in interruption and fragmentation of an individuals sleep. Symptoms may include excessive daytime sleepiness, anxiety, depression, reduced memory or concentration and even reduced sex drive. Patients with untreated sleep apnea have an increased incidence of heart attacks, strokes, high blood pressure, and traffic accidents.
	Narcolepsy A sleep disorder characterized by excessive daytime sleepiness and recurring unwanted episodes of sleep ("sleep attacksÓ). People with narcolepsy may abruptly fall asleep at almost any time, including while talking, eating, or even walking. The attacks may range from embarrassing or inconvenient to severely disabling, interfering with a person's daily life. An estimated 125,000-250,000 people in the United States have narcolepsy; it occurs about equally in males and females.
	Periodic Limb Movement Disorder This is the disturbance of lightening-fast muscle contractions which cause the leg/legs to jerk.
	Snoring A coarse, vibratory sound made in breathing during sleep or coma. It is caused by vibration of the soft palate and other throat tissues caused by turbulent airflow due to partial obstruction in the nasal and the throat areas.
	Insomnia Inability to initiate and to maintain sleep. Insomnia is a symptom and has a variety of different causes.