I believe they have also found that emotional traumas - abuse, etc - cause brain injuries similar to that of a concussion. Hence, an accident like yours can cause both at once! I know what you mean about brain fog - it's something I've been fighting for a very long time now. I don't know what the original cause was, but I've had multiple triggers. Most of the time I'm okay now, especially if I avoid soy and other things that trigger me, but other days, I struggle to put two words together correctly! I totally understand the struggle.
Thanks for sharing, again.