Robin Williams didn’t know he had this mysterious disease

Aired: 11/5/2015 | 0:06:02 | Clip
According to Robin Williams’ widow, an autopsy has revealed that the comedian suffered from Lewy body dementia before he committed suicide. Susan Schneider Williams described the battle to treat and understand her late husband's symptoms as a game of Whac-A-Mole. William Brangham learns about the lesser-known but common illness from Dr. James Galvin of Florida Atlantic University.