(Cover) - EN Showbiz - Justin Bieber is experiencing odd symptoms following the mild concussion he sustained Thursday.

The 18-year-old heartthrob hurt himself while performing a concert in Paris.

TMZ reports that after Justin sang onstage, the pop star walked backstage and slammed into a glass wall.

The star is now noticing that a portion of his face is temporarily paralysed.

"I can't move my eyebrow," Justin said in a video posted on Viddy.com video Friday. "It's the weirdest thing, some weird stuff going on."

Although disoriented, the star went back onstage to complete his show.

When Justin ambled backstage following the conclusion of his performance, the star "passed out cold for around 15 seconds."

Justin is upset that he has such bad lack with transparent blockades.

"I got into a fight with a glass window," he declared on the video.

This has been an eventful week for the young superstar, as 14 teenage girls had to be taken away for "emergency care" after hysteria over the singer broke out at the Norwegian show Wednesday. It is understood 49 fans were injured.

Justin was in Norway to perform four new songs outside Oslo's famed opera house as part of his Around the World TV special, attracting crazed fans from all over Europe. (C) Cover Media