Robin Williams' widow recently wrote an emotional essay about the disease that led the Academy Award winner to commit suicide.
The essay entitled, "The terrorist inside my husband's brain," was published last week in a neurology journal.
Susan Schneider Williams wrote about losing her best friend to a disease he didn't know he had, a disease that led him to commit suicide in 2014.
"Robin is and will always be a larger-than-life spirit who was inside the body of a normal man with a human brain," Williams wrote. "He just happened to be that 1 in 6 who is affected by brain disease."
Robin Williams had a disease known as Lewy Body Dementia.
According to the Alzheimer's Association, the disease can cause memory loss, hallucinations, delusions and Parkinson's symptoms among other problems.
Susan Schneider Williams wrote that her late husband's "firestorm of symptoms" began in October of 2013, the same month of their second wedding anniversary.
"I wondered privately, 'Is my husband a hypochondriac?' Not until after Robin left us would I discover that a sudden and prolonged spike in fear and anxiety can be an early indication of LBD," She wrote.
She went on to explain that during the following 10 months, Robin Williams struggled with paranoia, delusions, and insomnia, among other things.
By May 2014, Robin Williams was diagnosed with Parkinson's disease.
"At times, he would find himself stuck in a frozen stance, unable to move, and frustrated when he came out of it," Susan Williams wrote.
Throughout the course of Robin Williams' battle with the disease, he experienced nearly all of the 40-plus symptoms of LBD, except for hallucinations.
Susan Schneider Williams wrote that his delusions seemed to be calming down by the second weekend in August 2014.
"We did all the things we love on Saturday day and into the evening, it was perfect like one long date," she wrote. "By the end of Sunday, I was feeling that he was getting better."
But by Monday, Aug. 11, Robin Williams was gone.
"After Robin left, time has never functioned the same for me," she wrote. "My search for meaning has replicated like an inescapable spring throughout nearly every aspect of my world, including the most mundane."
After speaking with medical professionals who reviewed Robin Williams' medical record, she said all noted that his case "was one of the worst LBD pathologies they had seen."
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