Hi I too have PCS and some other issues. Wasn't rear ended like you.

But did a lot of falling issues. I have been to some different type of
treatments that were not known for PCS but technically helped it.

I have used Physical therapy for the stiff and non moving neck I had
for over 9 months. Thanks to one of my falls. My therapist did everything
she could and more.
A tens machine, traction, taping the neck(to release the tension and muscles)
The electrical machines that sooth. Don't know the names.

I have also had to go to a great neurologist for balance issues.

But the thing that he did that was the best was send me for physical
therapy for balance issues.

And that retrained my brain.

I am now in massage therapy and am also doing something about my
feet problems. Man I just seem to be a mess.

I got angry with myself, I seemed to cause my own problems.

But my primary didn't realize a neuro was needed. But the physical therapist
at the time was her idea.

Donna