Joni MItchell Frederick M. Brown/Getty Images According to TMZ, "Joni Mitchell is unconscious in a hospital, unable to respond to anyone, with no immediate prospects for getting better."

TMZ reports: "Joni's close friend of 44 years, Leslie Morris, has just filed legal docs to obtain a conservatorship over the legendary singer. Morris says Joni told her she has no close relatives who could assume the role."

The documents add that Mitchell is "so impaired as to be incapable of being assessed."

The 71-year-old "Big Yellow Taxi" singer was previously rushed to the hospital on March 31 after being found unconscious after passing out at her L.A. home.

A new update on JoniMitchell.com refutes the TMZ report:

Contrary to rumors circulating on the Internet today, Joni is not in a coma. Joni is still in the hospital - but she comprehends, she’s alert, and she has her full senses. A full recovery is expected. The document obtained by a certain media outlet simply gives her longtime friend Leslie Morris the authority - in the absence of 24-hour doctor care - to make care decisions for Joni once she leaves the hospital. As we all know, Joni is a strong-willed woman and is nowhere near giving up the fight. Please continue to keep Joni in your thoughts." You may add your well wishes for her at the website WeLoveYouJoni.com

According to Rolling Stone, "Mitchell has reportedly suffered from a rare condition called Morgellons for the past eight years. In Mitchell's case, she described the disorder as 'fibers in a variety of colors protrude out of my skin like mushrooms after a rainstorm.'"

"Morgellons is constantly morphing," Mitchell told The Daily Mail of her symptoms. "There are times when it's directly attacking the nervous system, as if you're being bitten by fleas and lice. It's all in the tissue and it's not a hallucination. It was eating me alive, sucking the juices out. I've been sick all my life."