Replying to Friend's memory issues

So we were maybe 5-6 friends at the hill taking laps in the park, enjoying a great spring day. But then, the oldest of us, a snowboarder decided to hit a pretty normal flat rail, which we all had done previously in the day. We don't exactly know how, but he bailed and landed right on his face. He was bleeding, no too badly though. When we went to see him he was alright, he even hit a few other features, including a pretty steezy 180in 180out on a up down box.

In the chairlift, he started to ask where his brother was. He was staring to forget things. Now he's at the hospital and his memory resets every 3 minutes. The doctors say he got a pretty bad concussion.. He has trouble remembering stuff that happened after christmas. He kept asking us the same questions every 2 or 3 minutes..

We're all pretty worried, just thought I would share this with you. Has it happened to anyone on here?