This book covers the rapid advances in scientific, technical, clinical, and therapeutic aspects of sleep medicine which have captivated sleep scientists and clinicians. The 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. Divided into 12 sections, this book begins by discussing the basic science (Section 1), before moving onto the laboratory evaluation (Section 2) and the clinical science (Section 3). The remainder of the book focuses on specific sleep disorders (Sections 4-12), from insomnias and parasomnias to sleep neurology and sleep and psychiatric disorders. Chapters are supplemented by tables, case reports, and illustrations intended to succinctly provide relevant information in a practical manner for diagnosis and treatment of sleep disorders, while always emphasizing clinical-behavioural-laboratory correlations.