Polydrug Abuse: The Results of a National Collaborative Study reports on the findings of a national study of polydrug users, initiated and organized by the Special Action Office of Drug Abuse Prevention. This book provides a comprehensive demographic, sociological, psychological, and medical study of polydrug cases. The chapters in the text cover the varieties and classification of polydrug abusers; an estimation of the magnitude of polydrug abuse; certain central nervous system consequences to chronic drug use; and the impact of polydrug abuse on physicians and other deliverers of health care. Physicians, epidemiologists, drug enforcers, and government policy makers will find the book interesting.