Robin Williams’ Widow says her husband had Alzheimer’s disease.

Robin Williams’ widow has decided to discuss the condition of her husband before he committed suicide on August 11, 2014.

From Buzzfeed:

The widow of Robin Williams has opened up for the first time since her husband killed himself in 2014, telling ABC’s Good Morning America that the actor was suffering from a neurodegenerative disease and had just three years to live when he killed himself.

“Lewy body dementia killed Robin,” Susan Schneider Williams said. “It’s what took his life.”

Robin Williams’ autopsy last year revealed that he had Lewy body dementia, which is often hard to diagnose and causes a progressive decline in mental abilities.

“We were living a nightmare,” Susan Williams said.

In his last month of his life, her husband was experiencing dementia, paranoia, hallucinations, and depression. He had not been diagnosed with Lewy body dementia, but he was aware of the fact that he was rapidly “disintegrating.”

Robin Williams was 63.