There has been a rapid global increase in the number of individuals making sleep medicine their career, resulting in an explosive growth in the number of sleep centres and programmes, as well as an increasing number of sleep societies and journals. Part of the Oxford Textbooks in Clinical Neurology series, the Oxford Textbook of Sleep Disorders covers the rapid advances in scientific, technical, clinical, and therapeutic aspects of sleep medicine which have captivated sleep scientists and clinicians. This text aims to introduce sleep disorders within the context of classical neurological diseases, giving an in-depth coverage of the topic in a logical and orderly way, while emphasizing the practical aspects in a succinct and lucid manner.