Sorry to hear about your injury. I had the same type of thing happen to me except I was going about 55mph and hit a car that pulled out in front of me after running a stop sign. I was somewhat surprised when I found out I had a head injury since I hadn't even hit my head, but when you have whiplash like that I guess it's pretty common.

The only treatment that has helped me is physical therapy for my neck. I actually didn't realize I had a neck injury until about 6 months after my accident when it started really giving me problems. Anyways, I did some therapy for a month and it helped tremendously, so when I had a follow up with my Neuro this past month she let me go back and do some more.

My neck pain is completely gone, and so is the stiffness (as long as I keep up with my stretches every day) and as a result I also haven't gotten a headache for weeks! I used to get one or two migraines a week that would last all day, which was a problem that only started after the accident. I also get dizzy and carsick much less.

I still have my psychological symptoms (mood swings, irritability, brain-overload, memory and concentration problems, etc.) but even those have at least improved somewhat. I think that when one thing feels better it makes everything else feel a little better too.

So my advice to you would be to talk to your doctor (I'm assuming you're seeing a doctor for your TBI) about doing some physical therapy for your neck. Other than that, time is the biggest factor. My accident was about a year and 4 months ago, and although it's been really hard dealing with it I have definitely improved over the long run. It's just a slow process.

Just make sure you're eating healthy, getting some mild exercise (too much makes most people's symptoms worse), and plenty of rest.

Take care =) I'll say an extra prayer for you tonight