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When the world learned of Robin Williams’ death in August 2014, the collective laughter fell silent for a moment. The actor, comedian and gifted improviser took his own life at the age of 63. A news that shocked millions of people. Only after the autopsy did it become clear what invisible suffering Williams had endured until the end.
As the American edition of the British daily newspaper “Mirror” reports, it has now become known that he was first diagnosed with Parkinson’s. As an explanation for his increasing motor problems and the visible changes in the last years of his life.
But a late, post-mortem examination revealed an even more tragic truth: Williams suffered from Lewy body dementia (LBD), a rare but extremely aggressive disorder often confused with Parkinson’s.
A treacherous disease with complex symptoms
LBD is one of the various forms of dementia and leads to complex neurological symptoms – hallucinations, cognitive disorders, anxiety and severe cognitive fluctuations. Many sufferers experience a phase of misdiagnosis during which medications used to treat other conditions can even worsen symptoms.
Williams’ son Zak spoke openly in 2021 about his father’s difficult final years.
In a podcast, he explained how the misdiagnosis and treatment with Parkinson’s medication had made the situation worse. “What he was going through just didn’t match what other Parkinson’s patients experience,” Zak said. “He was frustrated, uncomfortable and felt like he was losing control – physically and mentally.”
The illness robbed Williams not only of his physical energy, but also of the ability to fully live out his art – the improvisation, the spontaneity, the intuitive grasp of moods. Everything that made him one of the greatest entertainers of his generation.
A legacy that lasts
Lewy body dementia is still incurable, and despite growing attention, research is still in its early stages. But through accounts like Zak Williams’s, awareness of this insidious disease is growing – and perhaps also an understanding that even the brightest lights sometimes go out in silence.

