Jon, I dealt with Parkinson's for 14 years. 24/7
It's a terrible disease.
It also made me a better man. But it took a while..

I hope medication helps slow the pace. But in all reality, if you are just seeing symptoms now, he's had it for quite a while already.
Just continue to be a friend. Sometimes just sitting around reminiscing is the best medicine of all.

Out there doing it best I can.