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Phencyclidine-induced psychosis

R M Allen, S J Young

The American Journal of Psychiatry

|September 1, 1978

Summary

This summary is machine-generated.

Phencyclidine (PCP) can cause prolonged psychotic reactions, including agitation and delusions, lasting over 30 days. These effects suggest PCP may serve as a valuable drug model for studying schizophrenia.

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Area of Science:

Psychiatry
Neuroscience
Pharmacology

Background:

Phencyclidine (PCP) is a dissociative drug known for its psychoactive effects.
Clinical observations suggest PCP can induce psychosis mimicking symptoms of schizophrenia.

Purpose of the Study:

To describe the clinical presentation and duration of psychosis in patients exposed to phencyclidine.
To evaluate phencyclidine as a potential drug model for schizophrenia research.

Main Methods:

Retrospective case series analysis of 9 patients admitted with phencyclidine-induced psychosis.
Clinical observation of symptoms including hostility, agitation, tangentiality, delusions, and disorientation.
Monitoring of psychotic episode duration despite antipsychotic treatment.

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Main Results:

All 9 patients exhibited hostility, agitation, and tangentiality.
Delusions of influence and religious grandiosity were common.
Auditory hallucinations occurred in 6 patients, and 4 experienced disorientation.
Psychotic episodes frequently persisted beyond 30 days despite treatment.

Conclusions:

Phencyclidine-induced psychosis is characterized by prolonged and severe symptoms.
The persistent nature of these reactions supports the use of phencyclidine as a drug model for schizophrenia.
Further research into PCP's neurobiological effects may offer insights into schizophrenia pathophysiology.