It has been reported by WWE.com that Christian suffered a concussion during his match against Randy Orton on last week's Raw. WWE physician Dr. Chris Amann noted the Christian has been removed from all activity.
"His ImPACT scores are normal, but he's still having some symptoms of fogginess and cloudiness," said Amann. "We are waiting for symptoms to get better until we perform an in-ring exertional challenge later this week at the Performance Center in Orlando. At that point, if he's able to get in the ring and exert himself, and work without symptoms, we'll go ahead and clear him [to compete]."
Christian did appear on last night's episode of Raw, but in a non-wrestling role, spectating the main event match between Daniel Bryan and the Big Show.