Pajamas can help us feel warm, comfortable, and safe, no matter how we're feeling physically. It would make sense for kids to get them when they're in the hospital — but most don't.

Jaz Gray certainly didn't, even though she was a hospital regular as a kid, having been born with one of the rarest vascular anomalies in the world.

It's called an arteriovenous malformation, which is basically a tangle of blood vessels connecting arteries and veins. While they most often form in the brain or spine, Gray's is on her jaw.