Which drug is associated with euphoria or rage, reddish skin, dilated pupils, nystagmus, and excitation?

• A. Methamphetamine
• B. Cocaine
• C. LSD
• D. PCP

Answer: (D)

PCP is a dissociative drug that blocks NMDA receptors, leading to dissociation, analgesia, and vivid perceptual distortions. A hallmark of PCP intoxication is nystagmus, often vertical, along with marked autonomic arousal. The presentation can range from euphoria to agitation or rage, and the skin may appear flushed or reddened due to vasodilation. Because of this combination—euphoria or aggression, dilated pupils, excitation, and especially nystagmus—PCP fits best. The other options can cause euphoria and pupil dilation but do not typically produce nystagmus paired with dissociation and aggression in the same pattern.