Comprehensive yet utterly practical, this invaluable handbook provides psychiatrists, psychologists, and other health professionals with a thorough review of theoretical and practical approaches to managing licit and illicit related disorders in young people up to the age of 25 years old.It provides a critical and systematic understanding of the theoretical and scientific basis of the assessment and management of substance misuse problems in adolescents. Also it supports the reader in developing qualities and transferable specialist skills necessary for employment, education, or research related to substance misuse problems in adolescence. Case vignettes are used to illustrate daily challenges, and practical advice provided on clinical decision making to manage difficult cases and problems. It reviews current policies, prevention, and treatment services at an international level with a wealth of online links to current key information.Prepared by a high-profile team of key opinion leaders and leading professionals, it contains ground-breaking contributions from global expets. It helps medical practitioners, psychologists, social workers, police, probation officers, educationalists, and other related social and health care professionals to intervene effectively in this complex and vulnerable group of young people.