I suppose I could turn down the stim controls to a lower vibration, but I don't I figure if I'm gonna use....turn it up, baby! To me, when it's too low, it's like a tickling tease instead of a satisfying pain reliever.

My headache is much like you described, Fiona ...... especially at the temples. I also get to feeling light-headed a bit..... like my brain got deprived of oxygen. Nonetheless, I still love the nerve-pain relief in the upper extremities. Don't notice a headache at all from the lumbar stim. Plus! if I do keep it on a night, I get the weirdest intense nightmares/dreams and wake up very lethargic in the mornings. Suppose that stimulator is stimulating odd parts in the brain too