Hello Dale,
I am so very sorry to hear that you have had so many head traumas and are in pain. We can relate to chronic pain. It is disruptive to our lives and brings us many challenges.
You are always Welcome in the Pain Mangement Community but I encourage you to also post in our Migraines and Headache Forum. There members may have better information for you based on their personal experiences. Below is the link:
http://www.medhelp.org/forums/Migraines--Headaches/show/123
I assume you have consulted numerous neurologists. If not please do so. I agree that you may have PCS. Obviously avoiding additional head trauma is key.
I hope you will find a remedy to your pain. Please feel free to keep us posted. I wish I had better suggestions for you. I do encourage you to continue to seek solutions. Best of luck to you.
Take Care,
~Tuck