title: Disorders of sleep and wakefulness.
abstract: This article provides information on the background and development of "sleep disorders medicine" and sleep disorders centers and a discussion of obstructive sleep apnea, narcolepsy, sleep-related periodic leg movements, and the use and misuse of hypnotic medication.
mesh_terms: D006801:Humans; D006993:Hypnotics and Sedatives / Q000627:therapeutic use; D009290:Narcolepsy / Q000175:diagnosis; D011320:Primary Health Care; D012148:Restless Legs Syndrome / Q000175:diagnosis; D012891:Sleep Apnea Syndromes / Q000175:diagnosis; D007319:Sleep Initiation and Maintenance Disorders / Q000175:diagnosis / Q000188:drug therapy; D012893:Sleep Wake Disorders / Q000175:diagnosis*; D014851:Wakefulness
chemical_list: D006993:Hypnotics and Sedatives