VINCENT MACALUSO, MD: I do remember calling up my father and mom and telling them, you know, "I just can't do this, I don't know what's going to happen. You know, I don't want to -- I can't be a doctor and not be able to walk or, if I'm blind, I can't be a functioning physician that way." And that's when my father intervened, which he has throughout my life in telling me to just stop wondering about the what-ifs; nobody has any control over the what-ifs.
ANNOUNCER: And Vince became a doctor. But as a resident, he started to have weakness in his legs. By then, medications called interferons had been developed to curb the progress of MS. Vince began, and continues to take, a weekly shot of interferon.
VINCENT MACALUSO, MD: I started medication in 1997, and since that time, I've really only had trouble with coordination in my left hand and one time with a bout of optic neuritis last year. And I took courses of steroids for my optic neuritis, and that totally went away.
ANNOUNCER: So MS became part of Vince Macaluso's life. Oddly, it had always been a part of the picture that Vince had for his future: To become a neurologist.
VINCENT MACALUSO, MD: I figure, if I can help other people explain this very difficult entity of the brain, if I can explain that to them, then I've helped open up a whole new world to other people as well.
ANNOUNCER: Eventually MS would also become Vince's specialty.