Charlie Sheen Checks into Rehab

 Charlie Sheen has voluntarily entered an undisclosed rehabilitation center for treatment on Friday, his representative said. "He is most grateful to all who have expressed their concern," Sheen representative Stan Rosenfield said.

The announcement came a day after Sheen was rushed to Cedars-Sinai Medical Center, where Rosenfield said he was treated for severe pain related to a hernia. He checked out of Cedars-Sinai hospital Thursday night, he said.

"Charlie has had a hernia condition for some time," Rosenfield said. "I was told by the person who made the 911 call that it was hernia-related."

For the time being, Sheen's hit CBS sitcom "Two and a Half Men" has been placed on "production hiatus," CBS and Warner Bros. Television said Friday.