"Penguins center and captain Sidney Crosby is not practicing with the club today at Consol Energy Center.
His status for Tuesday's home game against Detroit and beyond is not clear. He is expected to speak to reporters at some point today.
Crosby was held out of the past two games because of a headache and perhaps other problems. He missed 61 earlier games because of a concussion and has 12 points in eight games since his return last month."