A practical illustrated guide to sleep disorders which will give health professionals confidence in this complex area of diagnosis and management. It explains the differences between normal and abnormal sleep, and looks in depth at individual disorders such as sleep apnoea, insomnia, narcolepsy, restless legs syndrome and the parasomnias, as well as sleep disorders as a comorbidity of neurodegenerative and psychiatric disease. Common sleep disorders in children are addressed in detail before concluding with an overview of pharmacological treatments and how commonly used drugs might affect sleep.