LOS ANGELES, Nov. 12 (UPI) -- Robin Williams was reportedly having hallucinations brought on by dementia before his suicide, according to his autopsy report.
The dementia, more specifically Lewy Body Dementia, can cause patients to see things that are not there like bugs or other objects. It is caused clumps of a protein substance, or "bodies," that block nerve cells in the brain and disrupt function. In addition to the hallucinations, the disease also interferes with memory and language.