Pittsburgh Steelers tight end Heath Miller missed practice Thursday because of an exercise-related headache, putting his status for Sunday's game against the New York Jets (9-4) in question.
Miller sustained a concussion Dec. 5 against the Baltimore Ravens, causing him to miss last weekend's game against the Cincinnati Bengals. Ravens linebacker Jameel McClain was fined $40,000 by the NFL for the helmet hit.
Miller was cleared to resume practicing and did so Wednesday, only to be held out of Thursday's practice because of a setback in his recovery.
"He experienced a little headache," Steelers offensive coordinator Bruce Arians told the *Pittsburgh Post-Gazette*. "Very cautious. We're not going to take any chances with him."
Arians told the newspaper that he hopes Miller won't miss more time.
"I sure have my fingers crossed. I hope so, but we're going to do what's in his best interests, his family's," Arians said. "We're not going to force anything. He's smart enough to make the right decision."
The Steelers (10-3) went through a similar situation last season with quarterback Ben Roethlisberger. He was cleared to play against the Ravens, but he was held out after experiencing post-concussion headaches.
Steelers linebacker James Harrison sat out practice for a second successive day with an undisclosed illness. Safety Troy Polamalu missed practice with an ankle injury.
The Associated Press contributed to this report.
