[ArtMonkDrillz]

Originally Posted by NYCSkin

Based on some of the reports it sounds like an epidural hemorrhage.

In this type of injury; a blow to the head (often the side of the head) causes some or no loss of consciousness followed by a period of lucidity. Then the patient can reports an intense headache as the blood from the hemorrhage builds up the pressure within the head. It can then progress to loss of consiousness and worsening symptoms and even death--especially if blood perfusion to the brain itself is compromised.

Though I never wore a helmet skiing, biking, or skating as a kid...I have all my kids in helmets for any of these kinds of activities...

I just read this article about that type of injury: Seemingly small head injuries can turn serious rapidly, experts say - CNN.com

This stuff freaks me out because I've had fair amount of head injuries in the past (I fractured my skull when I was 3, and I've had at least 4 other concussions) and now I get migraines and that sort of thing. When I was a kid it was almost always "take it easy for a day and you'll be fine," now I really think I'm paying the price for those blows to the head. That being said, I'm obviously lucky things aren't much much worse for me.