Transcript for New Clues in Robin Williams' Final Hours
possible new clue in the robin Williams case. We reported here was suffering from Parkinson's disease. Tonight, we're learning more about a troubling condition rep lated to it. ABC's Clayton Sandell with the family's reaction. Reporter: Doctors examines robin Williams' brain tissue found signs the comedian may have had something called Lewy body dementia, in addition to Parkinson's. Lewy body dementia can cause unusual behaviors, trouble sleeping and hallucinations. The coroner's report said the 63-year-old comedian releasedexperienced a recent increase and paranoia before he committed suicide in August. On the night he died, the autopsy report notes Williams reportedly placed wristwatches in a sock, as he worried about the watches and wanted to keep them safe. So, did Lewy body dementia play a role? His death? Sources close to Williams family tells us correlation doesn't necessarily equal call sags, but it was illuminating. It's a diagnosis that was frequently missed. A lot of people will have the pathology when it's not necessarily suspected bid their doctors initially. Reporter: The coroner's report also noted Williams did not have any illegal drugs or alcohol in his body when he died. The reason why an American icon took his own life may never be known. Clayton Sandell, ABC news, los Angeles.
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