I have developed a warm, tingling sensation in my lower back and buttock. It could be just be a pinched nerve thing, however I did have a sensory relapse in this area a few years ago.
It feels really good, ahhhh. Like someone's lightly massaging me.
I'm not ticklish anymore either, which is great.
I used to have diminished reflexes in my feet and pedicures were such a breeze.