Los Angeles - Demi Lovato has quit her Disney show Sonny with a Chance
The 18-year-old singer and actress - who was released from rehab
in January after three months of treatment for an eating disorder - has decided to leave the comedy show because she was nervous about going back in front of the camera.
She told People magazine: "It made sense for me to go ahead and leave the show to focus on my music.
"It's kind of sad for me that a chapter of my life has ended but there couldn't be a better time for me to move on.
"I don't think going back to Sonny
would be healthy for my recovery
. Being in front of a camera would make me nervous."
Demi - who has also confessed to having a nervous breakdown prior to her entry into rehab - has the full backing of the Disney Channel, with a spokesperson saying they "respected" her decision to leave.
A representative said: "We respect Demi's decision to focus full-time on her music and not immediately return to her acting career. She is a talented young woman and our hearts are with her as she continues to take action to improve her health and bounce back from adversity."