If you have to ask what kind of symptoms are plaguing Sidney Crosby, well I suggest getting cable under that rock you've been living under.
Yes, his concussion symptoms have returned and he has not been on the ice since his last game against the Boston Bruins, where he had two sizeable collisions, one with David Krejci and the other with teammate Chris Kunitz, the former likely being the straw that broke the camel's back, so to speak.
Crosby had a media conference on Monday morning to discuss his immediate future, which was fairly cloudy, to say the least. The explanation was that he was experiencing concussion-like symptoms, but he doesn't feel too bad, but there is still no timetable for his return, meaning that he'll be out for an indefinite period of time.
Bad news for the Penguins and poolies everywhere, especially those who took the chance on picking up Crosby upon his return in the sheet pool. In the draft, Kristy and Don, who took Crosby in the 1st round, will likely suffer for this turn of events, currently sitting in 9th spot in the standings, 16 points out of the money on Monday afternoon.