This book provides an up-to-date, authoritative, and highly readable overview of psychiatry, suitable for all psychiatrists, as well as medical students, general practitioners, and other mental health professionals. Written by experienced clinicians, the new edition has been substantially rewritten and updated. The first three chapters cover the symptoms and signs of psychiatric disorders, psychiatric classification (including DSM-5), and how to conduct a psychiatric assessment. Chapters on ethics and the law (including the Mental Health Act), aetiology, and evidence-based approaches, set the scene for description of the major syndromes of adult psychiatry. In each chapter, description of the cardinal clinical features is accompanied by the latest evidence on epidemiology, aetiology, treatment, and outcome. Subsequent chapters cover child psychiatry, the psychiatry of old age, intellectual disability, forensic psychiatry, substance misuse, suicide, and self-harm, and psychiatry in medical settings. After a new chapter on global mental health, two chapters cover psychological and psychopharmacological treatments: their indications, efficacy, side effects, and mechanisms. The final chapter describes how psychiatric services are organized.