PCP intoxication is best described as which of the following?

• A. A stimulant
• B. A dissociative anesthetic
• C. A narcotic
• D. A sedative hypnotic

Answer: (A)

PCP intoxication is best described as a dissociative anesthetic. PCP acts mainly as an NMDA receptor antagonist, which disrupts glutamatergic signaling in brain networks that integrate perception, memory, and pain. This leads to dissociation from the environment, alterations in perception, analgesia, and sometimes amnesia or out-of-body-type experiences. While you may see stimulant-like signs such as tachycardia or agitation, these are not the defining effect; they can accompany intoxication but do not characterize the drug’s primary action. It is not a narcotic (opioid) and not a sedative-hypnotic, as those classes produce different primary effects (opioids with respiratory depression and pinpoint pupils, sedative-hypnotics with sedation and slowed thinking). So the hallmark description that fits PCP best is dissociative anesthetic.