I recently received treatment that resulted in me needing a 5% Lidocaine patch on the base of my skull... So... It's running down from my skull to spine something like 6 inches... I swear, I was hallucinating. Bad dreams. Not good.
Would rather feel the original pain.
For those of you experimental types, the 5% patch is Japanese-made like some OTC brands. OTC is a 4% version.