Yes, we're back to doing these...
It was not a one-time incident in the game. He took a couple hits in the game and didn’t feel 100 percent after the game, so that was an indication. He went and saw Dr. (Michael) Collins the next day. His imPACT test was exactly what it was when he returned to play. Dr. Collins said there is no indication of a concussion at this point in time. After practice (Wednesday), he had a slight headache. He knows his body well. It’s been a long 10 months. And as a precautionary (move), he is just kind of taking tonight’s game off and through the weekend.
So Crosby has/had a "slight headache." Hmmm.... Pro Hockey Talk has more:
Bylsma said it was a slight headache. And according to Shelly Anderson of the Pittsburgh Post-Gazette, “Crosby participated in an hourlong practice Wednesday and appeared to be at full speed. Afterward, he did a lengthy set of interviews and spoke of playing tonight.” So at the very least, the headache wasn’t severe enough to keep him from conducting his usual media obligations.
The situation doesn't seem too severe, but there's no way to know for sure at this point. However, all signs point to Crosby simply missing a couple of games as a precaution.
EDIT: The Pens website has posted some quotes from Crosby:
"I just want to be smart with this," Crosby said to pittsburghpenguins.com. "It's been a long road back and we want to err on the side of caution.
"I've taken some good hits over the past few weeks and am happy with the way my body responded … but after discussing things with doctors it was better to make sure I was cautious before returning to play."
In other news, Brent Johnson missed the morning skate today, but he should be fine to be the back-up tonight. He was feeling "under the weather" earlier. Richard Park and Deryk Engelland are still day-to-day. Steve MacIntyre may play tonight.