My feet and hands also at times are numbish or tingly. Doc dismisses it.

I have my suspisions its the start of neurpoathy ( thanks K for the spelling) and I know nerves can heal, re grow and such. From personal experience. Nerves are very slow growing. How well nerves repair their connections is a wait and see situation.

My thought is if you can still feel the numbness, you have a better chance of healing. If total loss of sensation, its a longer process and worth fighting for.