Welcome to NeuroTalk:

First off get those results of the B12 testing. Lab ranges are outdated in the US and go down in regions where nerve damage can occur for some people.

If you are below 400pg/ml, you are going to have to supplement it.

Also get your Vit D tested. Low D is very common today. When D is low calcium levels get messed up and pain can occur in odd places on the body.

There can be nerve compressions at the elbow, or neck. Some people have a pressure palsy which can be hereditary.
http://en.wikipedia.org/wiki/Heredit...pressure_palsy

What were you doing when your palms flared up? Can you remember? Taking a drug for infection? Or statins for cholesterol? vaccines? Handling toxins, chemicals, solvents?
some kind of exercise? lifting weights, push ups etc?
Is this worse when you are hungry? Does eating relieve some symptoms? Are both hands affected equally?

Nothing in the feet?

Have you tried using the carpal tunnel wrist supports/splits at night? They take the pressure off the wrist while you sleep.