Fortunately, I don't suffer from too many head-aches, but I will add what I found out about fibrosis of the muscles for those of us in the "nuked club." The muscles in my neck often become quite sore and stiff, which sometimes contributes to my headaches. I knew this to be an after-affect of the radiation, but I asked my doc about it anyway. What he told me was the irradiated muscles will always be trying to fiber up....for the rest of my life. Stretching is the only way to mitigate this. So keep stretching those irradiated muscles.

-Brett