I had a nerve damage injury many years ago - instead of losing the feeling it became oversensitive, I apparently damaged the nerve sheath running through the muscle and as a result it was picking up the muscle movement impulses and translating it into pain as well as muscle movement. The end result was that I have had to have numerous segments of that nerve (the ulnar nurve) severed permanately and as such accept the loss of feeling (which trust me is great compared to living in permanent pain).
Nerve damage takes time - roughly 2 years I'm told. I am now repeating the exercise with my leg where the dog bit off a chunk. Thankfully that is complete loss of feeling. I have been told to make sure I frequently touch the area to continually stimulate the nerve endings - they are there, the connection has been severed further up the leg. I suspect you need to do the same.
Curiously I have the complete and opposite effect at seeing the insides of my body. It does not bother me in the slightest, I find it fascinating! I have cut a significant lump off one of my finger knuckles and watched in fasicnation as the whole of my finger came out of the skin when I bent it and back again when straightened - this actually made life easier for the consultant to check everythign was OK because it was all visible (the student doctor had to leave the room to throw up!) (checking the tendon sheaths were not damaged for those who are wondering...). as for my leg back in Feb of this year, it was a fascinating lesson on the insides of a leg in detail with muscle, tissues covering muscle, fatty tissue, skin layers, a major vein and nerve and other such blood vessels all visible in detail albeit in Turkish translated by a friend who turned out to be squeamish! (but his english was better than the plastic surgeons and the other doctors, put together...) I quickly learnt how to do stitches after watching nearly 100 of them put into my leg. I am now very good at them when I was officially trained to do them back in May...
I'll leave the rest of you to your lunches, if of course you are not squeamish!