Demi Lovato Checks Into Treatment Center, Quits Jonas Brothers Tour

7:35 PM PDT 11/1/2010 by Shirley Halperin

A rep for Demi Lovato tells TMZ the teen pop star checked into a treatment center this past weekend seeking help for "emotional and physical issues she has dealt with for some time." Lovato, 18, who had dated Joe Jonas up until May of this year, was allegedly involved in some sort of physical altercation with a female member of the tour, according to the website, which it claims was a "catalyst" in her decision to seek professional help. Drugs are not believed to be the cause.