Bull coach Tom Thibodeau said Hamilton will be examined on Tuesday, but wasn't sure of the exact nature of his injury.
"He will be examined (Tuesday)," Thibodeau said. "He collided and it's a shoulder. I thought it was a stinger. He tried to shake it off. That wasn't the case. We'll have to wait untill (Tuesday)."
Hamilton left the floor about 90 seconds into the Bulls' 92-72 victory, walking directly into the tunnel leading to the Chicago locker room while holding the shoulder. He was replaced in the lineup by Ronnie Brewer.
Hamilton, in his first season as a Bull, was looked at as the possible final piece in Chicago's quest for an NBA title but has been limited to 16 games because of nagging injuries. He's averaging 12.1 points, fourth-best on the Bulls.
Carlos Boozer is still confident that the Bulls can win even if Hamilton has to sit out for a long stretch again.
"The guys that came from back from last year are better than last year, and hungrier," Boozer said. "Obviously, we want everybody to be healthy. A big thing for us is we want to be healthy going into the playoffs. Knocking on wood, hopefully we will be. But once we get to that point, whoever we've got, we ride with."
Information from The Associated Press was used in this report.