--shoulder to hand/fingers, in addition to getting worked up for some of the more systemic causes of neuropathy listed on the Liza Jane charts, you should get some MRI's of cervical spine and shoulder areas (if you haven't already).

There are two conditions known as Brachial Plexopathy and Thoracic Outlet Syndrome that involve compression of nerves that go from the body cavity near the spine and down the arms; depending on where the compression is one can get symptoms anywhere from shoulder to fingertips. We have a good forum for these here that you should look through:

http://neurotalk.psychcentral.com/forum24.html

And, of course, compression at cervical nerve roots can cause these symptoms as well.

There is also the "double crush phenomenon"--a systemic neuromorbid condition (like diabetes, or autoimmune vasculitis) doesn't by itself cause much in the way of symptoms, but add another insult, such as compression, and then you get them. (Almost anyone with a systemic neuropathy cause is more prone to compressive effects--the already damaged nerves are just more sensitive).

Are your symptoms in all areas similar? Do you hve the same "type" of pain? There's nociceptive (normal) pain, then there's nerve pain (burning, lancating, elctrical, stinging--just some of the words used for this hard to describe sensation), and you can get numbness, feelings of things (i.e., fabric) touching skin/sensations of wind/water when there's nothing there, vibrations--the whole gamut of what is referred to as parastheses (literally, sensations beyond the normal).