Hello, there. Welcome to NeuroTalk.

You really need to get some blood tests to see where you are.

Have a B12 done, and also a Vitamin D.
Low D impacts calcium metabolism, and can cause nerves to misfire and create paresthesias.
Here is the new medical video on Vit D.:
http://www.youtube.com/watch?v=TQ-qekFoi-o

If you don't know what is going on, you really cannot fix it.

It would be a good idea to get some glucose testing as well.
Fasting glucose, and fasting insulin, and HbA1C will tell if you are getting
low blood sugar as in pre-diabetes, or are beginning to get typeII.

Have you taken any medicines recently, or currently? Some drugs cause PN.

Arthritis is an inflammatory condition, and as a rule does not go away. Manipulation of the spine can improve pressure on nerve roots, but if spurs are growing or discs degrading, chiropractic adjustments may no longer work. So you need to get xrays, or MRIs to see what is really going on there.