Just a quickie to say that my brain MRI came back negative. The only thing they found was a little scar tissue from the surgery ten years ago. That's a huge relief, but still doesn't explain the headache that has been going on for two and a half weeks. One suggestion he had was an occipital nerve block, which I nayed. No needles in my head, thank you very much. He did start me back on anti-seizure meds that I took for six years after the first surgery, and hopefully those will relax nerves enough to give me some relief.
My heartfelt thanks to all my blogger friends who emailed me with their thoughts and prayers. You are very special to me.