What substance is associated with symptoms of agitation, diaphoresis, and dilated pupils when intoxicated?

Cocaine is indeed associated with symptoms of agitation, diaphoresis (excessive sweating), and dilated pupils when a person is intoxicated. These symptoms are indicative of the stimulant effects of cocaine on the central nervous system. Cocaine increases levels of dopamine in the brain, leading to heightened alertness, increased energy, and euphoria, which can correspond with agitation. The physiological responses include sweating due to increased metabolic activity and the body's response to stimulant effects, while dilated pupils are a common reaction as the body reacts to increased sympathetic nervous system activity.

In contrast, other substances listed tend to present with different symptom profiles. Alcohol typically leads to sedation, decreased motor function, and constricted pupils in cases of intoxication. Heroin, an opioid, is more associated with symptoms like drowsiness, respiratory depression, and pinpoint pupils rather than the hyperactivity seen with stimulants. MDMA can cause increased energy and euphoria, but its typical symptoms involve increased body temperature, altered sensory perception, and jaw clenching rather than agitation or pronounced diaphoresis and pupil dilation. Thus, the combination of agitation, sweating, and dilated pupils aligns specifically with cocaine intoxication.