I just wanted to know EXACTLY what you are saying when you wake up with your heart racing. My doctor tried to say I have an anxiety disorder (which I do not) and recommended anti-anxiety medications...which I did not take.

This is not exactly anxiety. It is the reaction the brain can have when you injure it. The brain stem which regulates things like breathing and heartrate often gets damaged on impact. DON'T worry (well try not to if you can, I know it's hard) it does go away. For me the racing heart went away after 3 months...after my brain no longer felt like it was swelling out of my head.

I think the body just goes into complete panic mode when its main center (the brain) is disrupted.