I don't think Parkinson's is a disease at all.
My best guess is that it's essentially a structural problem (musculoskeletal, soft tissue - fascia?) that creates an over the top demand for dopamine - and we just can't keep up with the demand.
Along that line, I'd like to ask how many of us experienced Frozen Shoulder prior to PD symptoms? I did - and evidently so have many others.
http://jnnp.bmj.com/cgi/content/abstract/52/1/63 Mine seemed to gradually resolve....but what if there are still problems originating in that area?
Last summer I was doing quite well and then a minor (?) slip-bump threw me WAY back to the worst symptom days. Overnight I almost couldn't walk...and continue to decline. I feel it in my left -once frozen - shoulder. Maybe there is scar tissue in there that's disturbing, interrupting, blocking something?
Scoliosis also seems to be a PD feature. HOw many of us have that? I do...just slightly - but I can tell it's worsening. Supposedly it's due to an unstable pelvis.
Maybe this should be a new thread...?
Ibby