title: Insomnia. What to do when you can't get a good night's sleep.
mesh_terms: D000293:Adolescent; D000368:Aged; D000375:Aging / Q000502:physiology; D006801:Humans; D007319:Sleep Initiation and Maintenance Disorders / Q000453:epidemiology / Q000503:physiopathology / Q000517:prevention & control*