This sourcebook offers basic consumer health information about common sleep disorders, including insomnia, sleep apnea, narcolepsy, circadian rhythm disorders, parasomnias, and other health problems that affect sleep, such as cancer, pain, and respiratory disorders. It explains how much sleep is needed, the causes and consequences of sleep deprivation, and the methods used to prevent, diagnose, and treat sleep disorders. Pediatric sleep issues that impact children from infancy through the teen years are also discussed. A glossary of terms related to sleep disorders and a list of resources for further help and information are also included. A glossary of terms related to sleep disorders and a list of resources for further help and information are also included.