Phencyclidine (1-[1-phenylcyclohexyl]piperidine, PCP, hog, sheets, angel dust, Sernylan, and many other common names) is a primate anesthetic that has emerged as a common drug of abuse and as a medical emergency problem during the past few years. Phencyclidine abuse is primarily a youthful activity. It is associated with multiple clinical states, an unusual amount of aggressive behavior, and a...