Clinical pharmacology of phencyclidine toxicity.

Phencyclidine appears to be unique in action compared with other psychedelic drugs, and its effects are less dependent upon the individual's personality than are the effects of LSD or mescaline. The authors discuss the sensory, psychological, and behavioral symptoms of phencyclidine intoxication. Most cases are of short duration and the only treatment necessary may be observation together with minimal stimulation and diazepam. However, prolonged and severe behavioral disturbances, exaggeration of preexisting thought disorder, and serious medical complications commonly occur and must be considered in the treatment plan.