
June 2, 2012
The "Bieber mania" reached Oslo, Norway, in the course of three days, leaving 49 injured teen mad with hysteria.
But it seems that there were not the only ones that hurt themselves, the young pop singer suffered a concussion after hitting his head against a window backstage at a concert in Paris.
Justin, now calmer tweeted to his fans: "I hit my head and just needed some water. It's all good. Thank you. "





