We were hit in the head with a boulder in elementary school, tons of blood (the school nurse who came running out to the playground fainted!)...we have always wondered this as well and no doc would ever really consider it as a cause.

I have read many PWP who before their dx, had one or more of the following:

1. head trauma
2. car accident
3. surgery (very often planned!)

Go figure. I dont' know what to make of it except that you may want to look into Dr. Peter Jannetta's work with microvascular decompression.....I have posted about him here on the forumi if you are interested. While you are having your testing done, it might not be a bad idea to have a Tesla 3 MRI done of your brain, only the T3 can see the compression Dr. Jannetta's procedure addresses.