Susan Schneider, the wife of comedy legend Robin Williams, released a statement Thursday morning which revealed, for the first time to the public, that he was battling the "early stages" of Parkinson's Disease prior to his death Monday.

"Robin spent so much of his life helping others. Whether he was entertaining millions on stage, film or television, our troops on the frontlines, or comforting a sick child — Robin wanted us to laugh and to feel less afraid," the statement read.

"Since his passing, all of us who loved Robin have found some solace in the tremendous outpouring of affection and admiration for him from the millions of people whose lives he touched. His greatest legacy, besides his three children, is the joy and happiness he offered to others, particularly to those fighting personal battles."

She went on to address the issue which, before now, had never been revealed to the public.

"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. It is our hope in the wake of Robin's tragic passing, that others will find the strength to seek the care and support they need to treat whatever battles they are facing so they may feel less afraid."

Williams had been battling depression and substance abuse issues before his death, and had recently undergone a stint in rehab to maintain his sobriety.