Quartz | Robin Williams suffered from a common form of dementia that many people don't know about Quartz Together, DLB and Parkinson's form the second most common form of degenerative dementia after Alzheimer's disease, and are said to affect around 1.4 million people in the US. Because the symptoms of DLB closely resemble those of Parkinson's and ... Robin Williams's widow reveals how dying actor fought 'chemical warfare in his brain' Robin Williams' wife writes about 'terrorist' in actor's brain during struggle with dementia Robin Williams death: Wife details 'devastating' final months of his life |