Searching and searching the internet, I've discovered probably some interesting links : : :
1) cam.ac.uk/subjects/parkinso... >>>>>> but perhaps Simon (science of Parkinson) will post regularly everything of these things
2) this guy in London, at first view a bit esoteric, but still also trained by Bruno Donatini, a gastroenterologist and osteopath, who also treats Parkinson patients.
Some interesting tests, unfortunately logistic and time-dependent I can't visit him this year, so............perhaps can HealthUnlocked - UK people give it a try ??
Of course, we have to be careful, I never heard about him. (perhaps while he is not such a video-YouTube freak like some other therapists).
infinity-alignment.com/natu...
Curious and also hopeful greetings !