Sleep disorders can be defined as irregularity in sleeping patterns that interfere with the daily functioning of the living organism. There are huge numbers of problems related to sleep such as delayed sleep phase disorder, catathrenia, bruxism, idiopathic hypersomnia, nocturia, narcolepsy, parasomnias, sleep paralysis, etc. These disorders can affect the mental, social and physical well-being of people. This book aims to shed light on some of the unexplored aspects and the recent researches in this field. The growing need of advanced treatment is the reason that has fueled the research in the field of sleep disorders in recent times. It strives to provide a fair idea about this discipline and to help develop a better understanding of the latest diagnostic and treatment related advances. The topics covered in this book offer the readers new insights related to sleep disorders.