Please check out my YoTube Channel and PlayLists. There are many videos, all free, that can help with a variety of PD things. I have DBS now but DBS is not perfect and I still use the tricks from the videos but give myself more movement control when needed...
Videos & PlayLists from YouTube channel:
https://www.youtube.com/user/mickvanwes/playlists
I have done both, they are excellent and helpful programs. If you can get into a program by all means do it.
Exercise, LSVT BIG, LSVT LOUD, music therapy, art therapy, massage
No, but maybe one day science can help us more to help us