Probably the most common one is that patients will be debilitated within a few years after the diagnosis, severely debilitated. Although it is a chronic and progressive disorder, one cannot predict how any given patient will do over the course of a number of years. I've had many patients who have done well for 20 years or more. We have a number of drugs that are effective in the treatment, and there is work ongoing to develop better treatment. I wish I knew the complete answer to that story.
Younger patients do better.
Patients with tremor often do better. Let me say that there is quite a bit of research going on in Parkinson's Disease for better treatments. I'm a part of is the Parkinson's study group, which is involved in a number of trials to develop better therapies for Parkinson's Disease, and working very hard to do that. And in fact, our group does have its own web site. There are investigators from over 70 medical centers across North America.