• Unless you have a specific injury or a disease, I think a lot of people don't quite understand. I think a lot of people put arthritis in the same category. There's a real difference from someone whose joints swell, that's probably rheumatoid arthritis, than what I have.

    Kristin Armstrong: Unless you have a specific injury or a disease, I think a lot of people don't quite understand. I think a lot of people put arthritis in the same category. There's a real difference from someone whose joints swell, that's probably rheumatoid arthritis, than what I have.