By James Caldwell, PWTorch assistant editor

Friday Update: WWE World Hvt. champion Dolph Ziggler has been diagnosed with retrograde amnesia after reportedly suffering a concussion at Tuesday's Smackdown TV taping.

WWE released an update on Ziggler's health Friday, which includes Ziggler saying he doesn't remember Monday's Raw, doesn't remember traveling from Raw to Smackdown on Tuesday, or going to the airport on Wednesday to fly home.

Ziggler says staff members for the Phoenix Suns evaluated Ziggler and he may require a CT scan when he sees the Suns medical staff again "in a couple of days."

Ziggler described the injury as "a little scary" when considering the effects of memory loss and how hard he was kicked in the head during the events at Tuesday's Smackdown taping.

WWE and Ziggler are not able to say yet whether Ziggler will be able to make his World Title defense at the Extreme Rules PPV in nine days. WWE simply said Ziggler "expects to be back in action soon."

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Thursday Update: WWE announcer Jim Ross described Dolph Ziggler's injury as a "serious concussion" on Thursday.

"There's no timeline as to Ziggler's return as WWE will be particularly cautious in dealing with any injury but especially a head injury," Ross wrote Thursday in a new blog at jrsbarbq.com.

Ziggler suffered the concussion at Tuesday's Smackdown TV taping, according to WWE. WWE has not provided their own medical update since releasing the initial injury report on Wednesday.

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Original Story May 8

World Hvt. champion Dolph Ziggler suffered a concussion at Tuesday's Smackdown TV taping, according to WWE.

WWE said Wednesday that Ziggler suffered the concussion interfering in a scheduled match between Big E. Langston and Jack Swagger at the Smackdown taping. (SPOILERS here.)

According to WWE's ringside doctor, Dr. Michael Sampson, Ziggler was "having some memory difficulties and a bit of a headache."

The next steps are Ziggler undergoing "neuropsychological testing" and WWE continuing to monitor Ziggler's recovery the next few days.

The World champ is scheduled for Smackdown house shows on Saturday and Sunday. He would have to pass a follow-up test to be cleared for action.

Ziggler's World Title defense against Jack Swagger and Alberto Del Rio at Extreme Rules is not in jeopardy, unless Ziggler shows zero improvement between now and May 19.

[Torch art credit Grant Gould (c) PWTorch.com]

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