Final answer:
PCP intoxication is notably associated with vertical nystagmus, an involuntary movement of the eyes that is not typically seen with other substances like alcohol.
Step-by-step explanation:
PCP intoxication is associated with a spectrum of symptoms due to its effects on multiple bodily systems. The five options provided represent different symptoms that could be associated with various substances or medical conditions. Based on the provided references, symptoms such as visual disturbances, muscle weakness, impaired coordination and balance, numbness, and impaired cognitive function and memory are indicative of PCP intoxication. However, one symptom - vertical nystagmus - is particularly associated with PCP intoxication and is not commonly associated with other substances such as alcohol. Vertical nystagmus is an involuntary rhythmic oscillation of the eyes that occurs primarily on the vertical plane and is a distinctive feature of PCP intoxication compared to other options listed. Vertical nystagmus, which is an involuntary, rhythmic movement of the eyes in an up-and-down motion, is one of the characteristic signs of PCP intoxication. Other common symptoms of PCP intoxication may include hallucinations, delirium, disorientation, agitation, altered perceptions of time and space, and impaired motor coordination. It's important to note that the effects of PCP can vary widely, and individuals may exhibit different combinations of symptoms. The use of PCP is associated with serious health risks and can lead to unpredictable and dangerous behavior. If someone is suspected of PCP intoxication, seeking medical attention is crucial.