I find the title of this topic interesting.... You've some sort of nerve damage?
Well, regardless. I know it's been my experience that the force is not a physical sensation, or rather not just a physical sensation. It's the force that drives us, allows us to communicate through very subtle body language.
It's that voice in your head that when you let it, gives you insight you often wonder as to what it's source was. It's what makes you happy to give to others, to assist them how you can regardless of how inconvenient it may be for you.
But that is just a small part of the force. I've also experienced during moments where I'll see a scene in a movie that doesn't so much inspire me but call to something within me where for that moment, I have clarity. The physical sensation is much as you described it. One could almost call it a shot of adrenalin but with it comes this sensation of, as I said before...clarity. Compassion as well.
I claim to be no Master, nor do I think anyone should. These are simply the thoughts of what I have experienced in my time with the force. (Though before turning to Jedi Realism, I practiced what I do now but just had no name for it.)