Robin Williams was reportedly suffering from the early stages of Parkinson's disease when he died, his wife said in a statement today.

"Robin's sobriety was intact and he was brave as he struggled with his own battles of depression, anxiety as well as early stages of Parkinson's Disease, which he was not yet ready to share publicly," the comedian's wife, Susan Schneider, said in a statement to ABC News, Variety and Agence France-Presse.

Williams committed suicide earlier this week. He was 63. 

Learn more about Parkinson's Disease on KFBK's Health Page, here.