General manager Ron Francis disclosed the diagnosis Monday and said doctors will continue to monitor Skinner in the coming days.
The 22-year-old Skinner was hurt during a 5-2 loss at Washington in the Hurricanes' preseason finale. He was hit by Capitals defenceman Matt Niskanen immediately following a faceoff.
Skinner is the second key Carolina player to be hurt this preseason. Center Jordan Staal will miss 4-6 months after breaking a bone in his leg on Sept. 23 at Buffalo.
Skinner has missed games with concussions in two of the past three years.
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