How can BDD make an attractive person believe they're ugly?

How can BDD make an attractive person believe they're ugly?

We're still trying to understand that. It's really a mystery, and as we learn a little bit more and more about some of the neurobiology, we're trying to figure that question out. There's possibilities that it may be something to do with chemical abnormality. We really have very little evidence about that now, but people are exploring that. And there may be something very different about how they're visually processing information that they see, and so we're also investigating that, as well.