I would give you half a leg to just reduce the pain. Heck, it can lurk around on level 3 out of 10, I'll just walk that off.
I have taken intranasal capsaicin to try to stop the pain because a paper on the internet said it might work. It didn't even hurt. I'll repeat that: I snorted the active ingredient in habaneros and pepper spray and didn't even feel it because it was so far overshadowed by the pain in my skull.