I started playing guitar for personal enjoyment in 2013 (courtesy of the excellent "Rocksmith" computer programme). Symptoms started later that year/early 2014, diagnosed with PD January 2015.
It affected my right side, so I struggled with fast plucking or strumming. Also got back pain from wearing the guitar.
Now on Sinemet/Azilect combo and the Sinemet especially has made a huge difference. It will be a long time before I can give Eddie Vedder a run for his money, but at least I feel there's a real chance I can actually improve.