Robin William committed suicide in August 2014 as a result of the debilitating brain disease, which is the second most common neurodegenerative dementia after Alzheimer's and causes heightened levels of anxiety, delusions and impaired movement
Robin Williams had Lewy Body Dementia and it wasn't until after his death that his family found out he had the disease. "I will never know the true depth of his suffering, nor just how hard he was fighting. But from where I stood, I saw the bravest man in the world playing the hardest role of his life," said his wife
People who suffer from this disease, which affects deposits of protein in the brain, may suffer from hallucinations
The autopsy reports said that the late actor had taken prescription medications, but in "therapeutic concentrations"