“That’s probably the toughest thing. You don’t get to come to the rink. It might sound weird, but that’s probably the toughest thing.

"It’s not the headaches and all that. It’s not being able to skate every day and being with your teammates.”

Teammate Andy McDonald has recovered sufficiently from his concussion to resume skating. He will keep increasing his workload with the goal of returning to action.

“I’m familiar with the fact setbacks do occur,” McDonald said. “For now, it’s just one day at a time. Today I had a good skate. We’ll see how I feel tomorrow and how the skate goes tomorrow.”

There is good chance McDonald will help this team at some point after the All-Star break. But there is no way to predict whether Perron will play again this season.

“He’s not nearly to the point that Andy is,” Blues general manager Doug Armstrong said. “David still has some symptoms here. He’ll be doing some light exercise and see how he feels after that.”

The team will rely on the doctors and players to assess the recovery process. All parties will proceed with caution.