Newswise — Robin Williams' wife recently revealed to People.com that the autopsy showed the comedian suffered from Lewy Body dementia. Alexander Pantelyat, M.D. will be available to discuss what we know about the disease. He can discuss the signs, symptoms, diagnosis and prognosis of patients with Lewy Body dementia. Pantelyat is a dementia expert that directs the Atypical Parkinsonism Center at Johns Hopkins Medicine.