One of the effects of heroin, many painkillers, and other opiate drugs is an increase in parasympathetic nervous system activation. If a patient comes into the emergency room and the doctor suspects he or she is under the influence of heroin, what simple physical symptom is the doctor likely to look for?

Question

Quizplus · Accepted Answer

Heroin and other opiates cause constriction of the pupils, leading to very small or "pinpoint" pupils, which is a common physical symptom of opiate use.

One of the Effects of Heroin, Many Painkillers, and Other