That's kind of interesting. I had a head injury when I was a baby (car accident, my car seat got whacked into the windshield of my mom's VW Bug. 1960's era VW Bug front seats weren't actually attached to the floor of the car).

I also had several concussions when I was growing up. One of those concussions also came with a very impressively painful case of whiplash. I wouldn't be surprised if head injuries had something to do with MS developing. But, I also think it's got a genetic component and a viral component too. I've got a 2nd cousin with MS, and I've also had shingles and mononucleosis (both at the same time). I've read that both shingles and mono both have something to do with MS. I just think I had the annoying luck of getting all the weird things that can potentially trigger MS.