Funny this has been known for a long time!

  "Descriptions of dream enactment by people with Parkinson’s are as old as recognition of the disease itself. In James Parkinson’s original description, “An Essay on the Shaking Palsy,” published in 1817, he wrote: “Tremulous motions of the limbs occur during sleep, and augment until they awaken the patient, and frequently with much agitation and alarm.” But despite similar reports over the next two centuries, the connection between dreams and disease remained obscure—so much so that Alda had to convince his neurologist to do a brain scan for Parkinson’s after he read about the link in a 2015 news article."