A 17 year old was taken to the emergency department when his mother found him unresponsive.Upon examination,his pupils were found to be pinpoints.This is a common sign of which of the following?

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Pinpoint pupils are a common sign of opioid intoxication.A thin white ring along the margin of the iris,called an arcus senilis,is common with aging but is abnormal in anyone less than age 40.Cloudy pupils indicate cataracts.Continuous dilation of pupils results from neurological disorders,glaucoma,trauma,eye medication,or withdrawal from opioids.

A 17 Year Old Was Taken to the Emergency Department