LOS ANGELES (AP/ABC News) - Robin Williams was in the early stages of Parkinson's disease and was sober at the time of his suicide, his wife said Thursday.
In a statement, Susan Schneider said that Williams, 63, was struggling with depression, anxiety and the Parkinson's diagnosis when he was found dead earlier this week. Authorities said the actor-comedian hung himself.
Schneider did not offer details on when Williams had been diagnosed or his symptoms.
Parkinson's disease is a progressive disorder of the nervous system that affects movement. It develops gradually, sometimes starting with a small tremor in one hand. The disorder also commonly causes stiffness or slowing of movement.
Actor Michael J. Fox, who has long had the disease, is known for his efforts to fund research into it.
Williams' wife said that he he had not been ready to share his Parkinson's diagnosis publicly.
Williams had publicly acknowledged periodic struggles with substance abuse prior to his death. Recently, depression had prompted him to enter rehab.
Schneider said via the statement, "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."
Schneider said that those who loved Williams are taking solace in the outpouring of affection and admiration for him.
She continued, "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. 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."