When I was a kid maybe about 10 years old there was an elderly couple that lived across the street. The woman had Parkinsons Disease. I didn't know what that was. I did notice however that my neighbor appeared quite frail. She was slumped over and walked with tiny shuffling steps. Her hands had a rolling shaking motion. Fast forward 53 years to when I was diagnosed....even though I understood more about PD, the image of my neighbor replayed over and over in my mind.
This article suggests that the image should keep up with the statistics of how PD should look today.