Lindros had his head down along the boards in the neutral zone when he was the victim of a clean hit by Washington Capitals defenseman Jason Doig midway through the second period at Madison Square Garden.
The 6-5, 237-pound Lindros stayed on the ice and sought out Doig off the ensuing faceoff. The two exchanged punches and received five minutes major penalties for fighting.
Lindros, who turns 31 next month, finished the period but appeared dazed as he left the bench for the locker room and did not return. The team said he will be re-evaluated Thursday.
It is the latest in a long line of concussions for Lindros, who has been sidelined 109 games since the start of the 1996-97 season due to a variety of injuries.