PCP (phencyclidine) is a dissociative drug that can distort perception and create a sense of detachment from the body or environment. Its effects can be unpredictable, especially when the substance, dose or contaminants are unknown.
Short-term effects and complications
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Effects may include numbness, poor coordination, confusion, hallucinations, agitation, changes in blood pressure or heart rate and reduced awareness of pain. Impaired judgment and perception may lead to injury. Combining substances can create additional, unpredictable risk.
Persistent mental-health effects
NIDA reports that PCP can cause short-term psychosis and, in some cases, symptoms that persist for days or weeks. A clinician should assess hallucinations, paranoia, mood changes, memory problems or continuing confusion.
PCP use disorder and treatment
PCP use disorder is a recognized diagnosis, but only a qualified professional can diagnose it. Treatment may include medical and psychiatric assessment, behavioral therapy, treatment of co-occurring conditions and continuing recovery support. The appropriate setting depends on current safety and clinical needs.
Frequently asked questions
Is PCP a hallucinogen?
PCP is generally classified as a dissociative drug; it can also cause hallucinations and major changes in perception.
Does PCP cause withdrawal?
Symptoms and needs vary. A clinician should assess recurring use, cravings, mental-health symptoms and other substances rather than relying on self-diagnosis.
Can PCP cause psychosis?
Yes. PCP can cause psychotic symptoms, which may sometimes continue beyond the immediate intoxication period.
How is PCP use treated?
Care is individualized and may combine medical assessment, behavioral treatment, psychiatric care and recovery support.
Sources
Last reviewed: July 11, 2026. Educational information only; it is not a diagnosis or individualized medical advice.
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Last reviewed: July 11, 2026