PD is bad enough on its own without dementia. My mother has had the early onset variety since her mid-thirties, and while her cognitive function has clearly dec

PD is bad enough on its own without dementia. My mother has had the early onset variety since her mid-thirties, and while her cognitive function has clearly declined, she's no where near dementia. On its own, the disease is like prison. You slowly become trapped in your own body and lose the ability to have an impact on the world around you. The treatments and medication cause diskinesia (the violent/uncontrollable tremors associated with the disease) and the wrong dose (for that day/time), or the wrong setting on the implant they put into the motor cortex to stimulate it, is as bad as no treatment at all. Depression is a common co-morbidity. Parkinsonism is watching yourself die with full knowledge of what's happening to you and a complete inability to do anything about it. My mother had polio as a child as well, so she's trying to learn to walk for the third time. There is no fate I find more horrifying on a personal level. None.