I second Vania's answer. I used to be incredibly sensitive to the slightest jolts, but after starting an anti-inflammatory diet I improved significantly. I'm still bothered by bumpy car rides and similar activities, as are many on this forum, but not nearly to the extent that I was.

Actually, the one thing I have the most difficulty with is my own footsteps. I have to be extremely careful not to let my heel strike hard on the ground or I will feel the jolt travel right up to my head. I look like a fool walking around practically on tip-toes wherever the ground is uneven, but that should the least of my concerns.

I think I agree with Mark that jolts like this are not actually damaging the brain, but they are certainly painful and can bring back a lot of symptoms for a few days. I also agree with Mark that there is a considerable anxiety component here, but I am also pretty sure it's not all anxiety. Invariably when a bump does give me anxiety, the anxiety makes things much worse, but I've also had loads of bumps that didn't give me anxiety but did bring back symptoms.