This issue is the definitive handbook on the most important psychiatric aspects of sleep medicine. Topics include a historical perspective of sleep and psychiatry; the psychology of sleep and dreaming; the prevalence, impact, pathogenesis, differential diagnosis, and evaluation of insomnia; pharmacological management of, as well as nonpharmacological strategies for, insomnia; excessive daytime somnolence and fatigue in the psychiatric patient; parasomnias; sleep in mood disorders, schizophrenia, and anixiety disorders; behavioral sleep disorders in children and adolescents; sleep disorders specifically in seniors and in women; and seasonal affective disorder and phototherapy.