What symptom is associated with opioid intoxication in a client with a substance use disorder?

Pinpoint pupils, or miosis, is a classic symptom associated with opioid intoxication. Opioids act as central nervous system depressants, leading to various physiological changes in the body. One prominent effect of opioids is their ability to restrict the size of the pupils, resulting in pinpoint pupils. This symptom is particularly significant in recognizing opioid overdose or intoxication, as it is distinct from other substances that may cause pupil dilation or varying pupil sizes.

In contrast, increased heart rate is typically associated with withdrawal symptoms or the use of stimulants rather than opioid use. Excessive sweating can also occur, but it is more common during withdrawal or as a side effect of opioid use over time rather than during acute intoxication. Heightened alertness is generally contrary to the sedative effects of opioids, as they often lead to drowsiness or decreased responsiveness. Understanding these physiological responses helps healthcare providers assess and manage patients with a suspected opioid use disorder accurately.