Depression is ubiquitous, but the number and range of physical and cognitive symptoms associated with major depressive disorder (MDD) means that many people do not present with emotional symptoms. The high prevalence of MDD with other medical illnesses means that other health professionals and physicians must also recognize and manage clinical depression in their patients. Part of the Oxford Psychiatry Library series, Depression, 3rd edition offers readers a succinct guide to the diagnostic and treatment issues that clinicians will encounter when working with patients with MDD. Offering critical discussions on the latest research, from DSM-5 and ICD-11, to the Canadian Network for Mood and Anxiety Treatments (CANMAT) guidelines, Depression ensures readers are kept abreast of the latest research in concisely written chapters. Each chapter begins with helpful key points and features up-to-date references for further reading. In addition, useful scales for assessing cognition and quality of life are included in the appendix, including recommendations for the use of new scales such as the Perceived Deficits Questionnaire (PDQ-5). Depression, 3rd edition is an invaluable resource and quick reference for busy clinicians wanting to expand their knowledge of current research. The book will appeal to clinical psychiatrists, trainees, specialist nurses, general practitioners, and other mental health professionals.