Hi Donna,
Mark asked some of the questions I had too.
I was mainly wondering how your injury/injuries came about.
and
what/where are your symptoms located that you mention??
(pain, stiffness, muscle spasm, mood, sleep,. etc.)
I don't have TBI , but did get a concussion from a horse accident in my teen years {almost 40 yrs ago}.
I didn't have any serious affects from it then.
But now that I'm older and had a job with constant repetitive arm & hand use as well as lots or reaching and lifting tools and parts, I did eventually acquire a chronic RSI/TOS condition.
I believe a factor in this for me, was the long term affects of the horse accident.
My theory - c1/c2 became misaligned most likely from the header off the horse, and over time caused the rest of my body to change alignment.
Then throw in being a "tomboy" playing various sports and other stunts, I did had other hits, falls and bumps through the years.
And also a minor car accident where I cracked my nose on the steering wheel.

So I had multiple small traumas and the repetitive job & age compounded all of it.
Just wanted to mention -
There is a condition called thoracic outlet syndrome {TOS} that can come into play from whiplash or other upper body injury in the neck, shoulder, collarbone areas. Usually shows as arm/hand/neck sx as well as upper back muscles spasms.
I'll add the link to our TOS forum sticky thread if you would like to look through it.
http://neurotalk.psychcentral.com/thread84.html
post # 1 has info sites that explain TOS and also a chiropractic section with info about the c1/c2 {atlas /axis} if you haven't read about it already.