This book has been extensively updated since the publication of the first edition in 2007 and contains a detailed presentation of the current definitions of insomnia and the differential diagnosis with conditions associated with insomnia (psychiatric, neurologic, sleep-related breathing disorders, circadian rhythm disorders, and certain medical conditions). Current understanding of the physiologic basis for insomnia clinical evaluation and short- and long-term management are addressed. Pharmacologic treatment options are presented in detail, including efficacy and safety data from the clinical trials of all available agents. Cognitive and behavioral approaches, including good sleep hygiene practices, are presented.