PCP is best described as which type of drug?

• A. Analgesic opioid
• B. Dissociative drug
• C. Stimulant
• D. Hallucinogen

Answer: (B)

Dissociation is the hallmark of PCP’s effects. It produces a sense of detachment from the surrounding environment and from one’s own body, often with analgesia and occasional catalepsy or rigid unconsciousness. This dissociative state comes from PCP’s action as a NMDA receptor antagonist, which disrupts excitatory glutamatergic signaling essential for integrating perception, memory, and sensation. That profile sets it apart from opioids, which provide analgesia mainly through mu receptors without causing the same dissociation; from stimulants, which primarily boost alertness and energy; and from many hallucinogens, which mainly distort perception rather than induce a profound sense of detachment from self and environment. PCP can also produce psychosis-like symptoms and nystagmus, reflecting its unique impact on perception and motor control.