Wild ass speculation (since we have little to go on here):
peripheral neuropathy, vitamin-related.
B6 deficiency. Might try B6 and taurine, plus magnesium in a soluble form (gluconate, citrate, malate, acetate).
If this doesn't work, switch B6 forms to whats called P-5-P; this came up on another forum today, and it makes sense that some of us won't convert the cheap synthetic commercial form of B6 to its biologically active counterpart.
The fact that you have the numbness in hand and foot does not lend itself to a cause from pinched nerves.
There maybe other causes; this is just a guess off the top of my head. You got diabetes, arthritis or asthma in your family history?