Ruby.

She was screaming uncontrollably, like she was in pain and confused and angry.

You could just see on her face, it was very, very clear that something was going very wrong.

When Rosie's thing was more of a new thing to all of us, I kind of more focused on the bad parts of it.

I am not going to be okay if we're too late to help Rosie.

It has to be Rosie.

We have to get it done in time for Rosie.

There's really nothing we can do, casing, you know, other than make her comfortable. Good luck.

How terrifying would it be to fight an unknown enemy? One you didn't recognize and didn't see

coming. What if that enemy was coming from within, a disease that even doctors couldn't

identify? Nearly half of Americans suffer from

some chronic illness, and many struggle for an accurate diagnosis. These are their stories.

I'm Lauren Bright Pacheco, and this is symptomatic. Before Casey McPherson became a father, he was a rock star.

As the frontman of Indy Sensation Flying Colors, he was used to life on the road.

I was touring all the time in a band.

I would be on tour for three weeks, six weeks, come home for a few weeks. You know,

you sort of arranged your life however you saw fit. You found incredible success as a musician,

but it was really hard-earned. Tell me a little bit about the early days when you first started

out. I'd spent over a decade living about the early days when you first started out.

I'd spent over a decade living under the poverty line, printing CDs in my house, and playing to bartenders, you know, touring in broken down vans.

I can't tell you how many times we broke down or the van caught on fire or whatever.

I remember one place we played said we drank more than they were going to pay us,

...