The irregularity in the sleep patterns of an individual is known as a sleep disorder. Sleep disorders can be of different types such as parasomnias, circadian rhythm sleep disorders and dyssomnias. Sleep sickness, hypersomnia, sleep apnea are some common sleep disorders. The treatment of the sleep disorders includes psychotherapeutic therapy, medication and rehabilitation. The topics included in this book on sleep disorders are of utmost significance and are bound to provide incredible insights to readers.