Actor Robin Williams' coroner's report reveals he suffered from a disease called Lewy body dementia. The autopsy report also shows that there was no alcohol or illegal drugs in his system. Lewy body dementia is a disease few have heard of, but an estimated 1.3 million people suffer from.
CNN's chief medical correspondent Sanjay Gupta breaks down the disease.
Many are wondering how actor and comedian Robin Williams could have been so successful while dealing with so many personal struggles.
In 2010, Williams spoke openly about his battle with depression and addiction and even thoughts of ending his life.
"When I was drinking, there was only one time, where even for a moment, I thought: 'F*** life.' But then even my conscience brain went, did you really just say f*** life?
Okay let's put the suicide over here as "discussable." Let's leave that over here in the 'discussion' area. We'll talk about that. First of all you don't have the balls to do it, I'm not going to say it out loud, I mean have you thought about buying a gun, no. What are you going to do, cut your wrist with a water pick? Maybe."
OutFront, neuro-psychiatrist Doctor Daniel Amen and Anson Williams who played Potsie on television sitcom "Happy Days," one of the first shows to launch Robin Williams' career.
WilliamsÂ guest starred as the alien Mork, a character that would prove to be so popular it led to the spinoff "Mork and Mindy."
"Mrs. Doubtfire" was one of Robin Williams' most iconic roles. The movie debuted in theaters in 1993. Recently, there had been reports that Williams was ready to reprise his role as the nanny in disguise.
OutFront is Lisa Jakub. She played Lydia Hillard, Robin Williams' daughter in "Mrs. Doubtfire."
The tributes to actor and comedian Robin Williams continue to pour in. The lights on Broadway were dimmed in his honor Wednesday night.
CNN'S Jeanne Moos has more on other tributes celebrating a man that made it his life mission to make people laugh.
Robin Williams' career spanned nearly four decades. He appeared in nearly 50 films and more than a dozen sitcoms throughout his career.
Williams was still working on several major projects prior to his death.
CNN's Ted Rowlands is OutFront with more on Williams' unfinished work.