Daily Mail | Robin Williams suffered Parkinson's and dementia together, reports suggest Daily Mail Or, if dementia is diagnosed before or at the same time as Parkinson's symptoms develop, they are said to have 'dementia with Lewy bodies' — a type of dementia that shares symptoms with Alzheimer's disease and Parkinson's. Parkinson's dementia and ... Paranoia a hallmark of Lewy body dementia Robin Williams' Autopsy Out, Lewy Body Dementia Made Him Kill Himself No cure, little awareness for Lewy body dementia |