Chicago Bears' linebacker Brian Urlacher all but confirmed an Internet report that he has an arthritic back after a subpar performance in Sunday's 16-7 loss to the Detroit Lions. Urlacher was credited with just four tackles on Sunday, another poor performance in an inconsistent season for him. The six-time Pro Bowl selection told foxsports.com that his back has been bothering him since training camp and that he recently had a specialist in Pittsburgh examine it. "He confirmed what the team told me, that they think it's an arthritis type of thing," Urlacher was quoted as saying in a story posted Sunday afternoon. "The thing that's so frustrating is there is no clear-cut solution to give me relief. I just have to deal with the pain." Asked if that report was accurate, Urlacher said "probably," but had little else to say after the game other than he will answer fans' questions on foxsports.com. It was not clear when he will do that.