Joni Mitchell is in intensive care

The Canadian singer-songwriter is undergoing tests in hospital after being found unconscious at her home.

Singer Joni Mitchell has been taken to hospital in Los Angeles.

Mitchell’s website and Twitter account reported that she was in hospital, but gave no details on her condition.

Los Angeles fire officials say paramedics answered a 911 call in Bel Air, where Mitchell lives, and took a patient to hospital.

The 71-year-old singer-songwriter told Billboard magazine in December that she has a rare skin condition, Morgellons disease, which prevents her from performing.

Still, she released a career-spanning four-disc box set last year and appeared at Clive Davis’ annual pre-Grammy party in February.

Mitchell has received eight Grammy Awards, including a lifetime achievement award in 2002. She was inducted into the Rock and Roll Hall of Fame in 1997.

Celebrities wished her well, including Billy Idol.

Sorry to hear todays news about Joni Mitchell. I sang on her 'Dancing Clown' single many moons ago, all the best 4 her recovery...

— Billy Idol (@BillyIdol) April 1, 2015