Research is developing a clearer picture of the dangers of mind-altering drugs. The goal of this report is to present the latest information to providers to help them strengthen their prevention and treatment efforts. A description is presented of dissociative drugs, and consideration is given as to why people take hallucinogens. The physical characteristics of LSD are described along with its mood altering effects. Specific facts about dissociative drugs are also included such as the forms of phencyclidine (PCP); the nature of ketamine and dextromethorphan; their street names; and their side effects. (Contains a glossary of terms and 10 references.) (JDM)