What do Robin Williams and sleep disorders have in common? Answer: Lewy bodies. According to recent news reports, Robin Williams was found to have diffuse Lewy body disease. Lewy bodies are abnormal clumps of microscopic proteins that can be discovered in the brain during an autopsy or biopsy. Their specific location in the brain often determines the presentation of symptoms that we might observe when a person is still living, such as unusual sleep activity, problems with bal