Heartbreaking details of Robin Williams’ final days revealed as he forgot ‘how to be funny’

Robin Williams spent his time on his last live action movie job sobbing behind the scenes and confiding in the crew.

He regularly told make-up artist Cheri Minns about his worries while filming Night At The Museum: Secret of the Tomb, and she told the New York Post that he suffered a break down on set.

“He was sobbing in my arms at the end of every day. It was horrible. Horrible,” she said in Dave Itzkoff’s eagerly-anticipated biography, Robin.

“At night I was on my computer, looking up, ‘How to deal with a paranoid’ so that I wouldn’t say the wrong thing.

“I said to his people, ‘I’m a makeup artist. I don’t have the capacity to deal with what’s happening to him.'”

And when she tried to convince the star – who didn’t realise he was battling an incurable brain disease – to return to stand up to rebuild his confidence, she said “He just cried and said, ‘I can’t, Cheri. I don’t know how anymore. I don’t know how to be funny.'”

The controversial new book that sheds devastating light on the star’s private health battles which led up to his subsequent suicide in August 2014, aged 63.

As well as suffering a dramatic lapse in memory, which frequently saw him forget his lines, he also developed an array of other symptoms including insomnia, heartburn, indigestion, loss of his sense of smell and trouble urinating.

In 2014 he was diagnosed with Parkinson’s Disease , although an autopsy would later reveal he was actually suffering from Lewy body disease – a degenerative and incurable condition that causes dementia and affects motor functioning.

“It was like playing whack-a-mole. Which symptom is it this month? I thought, is my husband a hypochondriac? We’re chasing it and there’s no answers, and by now we’d tried everything,” said his wife, Susan Scheider.

The last photo of Robin Williams posted on Instagram (Image: therobinwilliams/Instagram)