Doctors told this teen his panic attacks weren't serious – they were wrong

For years Chasin Mizrahi suffered debilitating panic attacks, but doctors said all he needed was therapy. Now Chasin joins Megyn Kelly TODAY with his mother, Jennifer Elkins Mizrahi, who explains how trusting her gut led to the discovery of her son's real malady - a dangerous brain tumor. Since brain surgery, Chasin says, he's "doing great."