Lewis Capaldi has shared his fears over the crippling anxiety, panic attacks and Tourette's syndrome that is starting to dominate his life.
The 26-year-old singing star revealed he's hit "extremely low points" after finding fame.
His health isn't what he wants it to be and the Scottish hitmaker says he is constantly up against "imposter syndrome" as his popularity soars.
Lewis is telling all in a Netflix documentary titled How I'm Feeling Now and hopes that viewers will be able to connect with his struggles.
He feels humour is the best way to tackle his issues but accepts his problems are only getting worse.
"I'm not confident in my abilities as a songwriter and I think that's got worse the more successful I've got," he said.
"The twitch that I have gets worse when I sit down to play the piano. Physically painful.
"And I get really short of breath and it's like my back kills me when I go to do it. Which is quite frightful."
He tells the documentary makers about his worrying panic attacks.
"I'm completely disconnected from reality," he explains. "I can't breathe, I can't feel breath going in.
"I get dizzy, I feel like something's happening in my head and I'm sweating.
"My whole body starts to do what my shoulder does and I'm convulsing. Either I feel like I'm going to be stuck like that forever or I'm going to die."
He knows his physical symptoms are a direction reaction to having his "world turned upside down".
The Scot adds: "For me it's a like a completely normal reaction to this. If you are put in this situation, you are going to have something like this, especially if you are already an anxious person, which I guess I was.
"I didn't ever have the pressure that came to make me full blown but we are there now so we just need to deal with it."
Lewis, who's Netflix documentary is set to be released on Wednesday, revealed his Tourette's tics cause accusations of drug taking.
He was diagnosed with the condition last year and has been open about it ever since.
He explained: "The truth is, I’m not banging loads of gear down. This isn’t drugs, and I’ve had that accusation on nights out.
"People have asked me directly, ‘Are you on drugs, is it cocaine?’ and I saw a few tweets knocking around after shows with people saying ‘He’s on drugs’ — and that wasn’t the case.
"If you think I’m going to take drugs and then come out on stage in front of 15,000 and then try to do a show — I mean, obviously, I wait until afterwards. That’s a joke," Lewis added to The Sun.
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