Helped to diagnose me with Parkinsons. Has been very good about answering questions over the phone if my next appt. isn't for a while. So far, mine is not too bad a case. My tremors are on the inside so it's quite annoying. My medication is working pretty good but I have a lot of off times before my next pill is due. If I remember, I forget I can do that. His personality is one that he takes time at my appts. to make sure I'm comfortable with everything I have questions about.