Lewy body dementia is an umbrella term for two similar and common subtypes of dementia: dementia with Lewy bodies (DLB) and
Parkinson's disease dementia (PDD). Both are characterized by changes in thinking, movement, behavior, and mood. The two conditions have similar features and may have similar causes, and are believed to belong on a spectrum of Lewy body disease that includes Parkinson's disease. As of 2014, they were more often misdiagnosed than any other common dementia.
Robin Williams (shown in 2011): his widow said he was diagnosed on autopsy with Lewy bodies.
Robin McLaurin Williams was an American actor and comedian. Known for his improvisational skills and the wide variety of characters he created on the spur of the moment and portrayed on film, in dramas and comedies alike, he is regarded as one of the greatest comedians of all time. He received numerous accolades including an Academy Award, two Primetime Emmy Awards, six Golden Globe Awards, five Grammy Awards, and two Screen Actors Guild Awards. He was awarded the Cecil B. DeMille Award in 2005.
Williams in 2011
Photo by Michael Dressler, used as cover photo for Time magazine, March 12, 1979
Williams in a promotional picture of Mork & Mindy, 1978
Williams and Yola Czaderska-Hayek at the 62nd Academy Awards in 1990