This article presents techniques for assesing & identifying addicted adolescents. The difference between adult & adolescent addictions is explained. The primary drugs used by adolescents are alcohol, marijuana, & cocaine, respectively. The authors detail the medical & social effects of each drug, such as falling grades, high blood presure, & suicide. Sections on diagnosing the adolescent, including drug history, physical examination, & urine drug screens asre also included. (VM)