Signs of Teen Fentanyl Use

<p>Parents are rightly terrified of fentanyl. But what behaviors should set off alarm bells? And how can parents keep the conversation pointed in the right direction when panic and big emotions start arriving? Clinician Sarah Polley, MD, joins host William C. Moyers to explain what teenagers are thinking about fentanyl, the signs they're using, and how you can intervene and make a difference. </p>