The premier text on substance abuse and addictive behaviors is now in its updated and expanded Fourth Edition, with up-to-the-minute insights from more than 150 experts at the front lines of patient management and research. This edition features expanded coverage of the neurobiology of abused substances, new pharmacologic therapies for addictions, and complete information on "club drugs" such as Ecstasy. New sections focus on addiction in children, adolescents, adults, and the elderly and women's health issues, including pregnancy. The expanded behavioral addictions section now includes hoarding, shopping, and computer/Internet abuse.