The Cincinnati Bengals' quest to land their first win on Sunday just became more difficult.
Palmer suffered the injury last week against the New York Giants. But he practiced this week through some discomfort until Friday, when he was held out of practice and put on the injury report as questionable.
Palmer had an MRI that shows no structural damage but the pain, inflammation and swelling persisted since his arm got pinned during contact in last week's game, ESPN's Chris Mortensen reported.
Palmer is having one of his worst statistical years of his career. He's thrown for 514 yards, one touchdown and three interceptions in three games. Palmer had told Bengals coach Marvin Lewis on Friday that he intended on playing.
Palmer missed the last three games of the 2004 season -- his first as the starter -- with a sprained knee. He tore ligaments in his left knee in the Bengals' first-round playoff loss to Pittsburgh in 2005, but didn't miss a game the next season. He took every snap last season.
Cincinnati backup quarterback Ryan Fitzpatrick will start Sunday against Cleveland.
The Bengals got Fitzpatrick in a trade with the Rams before last season. He hasn't thrown a pass in a regular-season game since 2005, when he started three games for St. Louis.
James Walker covers the AFC North for ESPN.com. Information from ESPN Senior NFL Analyst Chris Mortensen and The Associated Press was used in this report.