I lost a very good friend, Bill Boslaugh, in Sept. 2019 in almost identical circumstances, Parkinsons and dementia. We formed a jug band in college in 1965 and played together and stayed together as a band until his passing. What’s left of the band still gets together, but without Bill it’s pretty sad. @radd, I’m sorry for you and your friend, and for all of those here who have or will experience this.While Parkenson's is not the same, it still robs us of people we love like Alzheimers. I have a great friend that has shared the stage w me for many yrs playing n singing. Ironically like with your pal. My friend Dr. Dan was also a Big handsome man that we would refer to as sunshine, cuz when he walked into the building the place lit up. Parkensons has its horrible hand on him now, in fact its the plus version so he's been downed to being wheeled around, and recently had to get a trache in order to swallow food. He's still fighting the good fight to play his guitar and mando, even trying to still sing w that new device. He's so talented as a picker and singer, then this sh#t had to mow him over over the years. Dr Dan is not done blessing his family and every day is a gift still, I must say. He wrote a book about his fight, its still on amazon I think. All to say I feel for you, I know what this stuff does first hand, I've watched his family struggle and fight along side him. ... I'm so sorry to hear about your friend's battle.