When you mentioned the skin things, that could be neuropathy. But it could mean nerves being pinched in the spine. If I were you, I would mention these things to your general doctor first and see what he says. There are MRI's and xrays that could tell a Dr. if you need to see a specialist. Its all guess work without proof. Have you ever mentioned this to a Dr? Do you have bad pain in your spine? I wish I could help you, but I'm not a Dr. I have had a lot of spinal surgeries and they just don't operate until a work up has been done.
Good Luck!
Fancylady