ADELE has apologised to fans as she told how she had to pull the plug on a US tour or face permanently damaging her voice.
In a heartfelt message the Someone Like You singer explained she has been beset by throat problems all year but had tried to continue with her commitments.
However, she has now had to cancel an entire 10-date tour, which had been due to start tomorrow, on medical advice.
The singer, who has been diagnosed with a vocal cord haemorrhage, said: "I have absolutely no choice but to recuperate properly and fully, or I risk damaging my voice forever."
In a lengthy blog, the singer said she was "heartbroken and worried" by the ongoing problems with her voice.
Adele has experienced astonishing sales success this year with three million copies of her second album 21 sold in the UK this year.
She revealed that her voice had "switched off" entirely on a number of occasions.
And she now has to take a break rather than trying to carry on before getting fully better, which seems to have compounded her difficulties.
"I follow all the advice I'm given and stick to regimes, rules and practices to the best of my ability but it seems to simply not be enough," she said.
"The fact is I have never been able to fully recover from any of the problems that I've had and then continue to rest even once I'm recovered, because of my touring commitments."
The singer said she will soon begin "vocal rehab".
"Singing is literally my life - it's my hobby, my love, my freedom and now my job," she wrote.
"I have great confidence in believing you know how much this upsets me, how seriously I take it and how truly devastated and annoyed I am by this."
The 23-year-old resolved to be back on stage and better than ever.
"I will be back and I'm gonna smash the ball out the park once I'm touring again."