Credit: Frazer Harrison/Getty Images

Singer Demi Lovato has pulled out of her Camp Rock 2 tour with the Jonas Brothers, her rep confirms to She has previously battled eating disorders and self-mutilation.

"Demi Lovato left her tour early this weekend in order to seek medical treatment for emotional and physical issues she has dealt with for some time. Demi has decided to take personal responsibility for her actions and seek help. She is doing just that," her rep says.

Lovato, 18, was next scheduled to perform in Buenos Aires, Argentina, on Tuesday.

"Demi and her family ask that the media please respect their privacy during this difficult time," the rep adds. "She regrets not being able to finish her tour, but is looking forward to getting back to work in the near future."

Lovato won't likely be updating fans on her progress anytime soon: she deleted her Twitter account on Oct. 30.