--that a spinal/orthopedic consult is definitely in order.

The trouble is, symptoms of peripheral neuropathy can be exactly mimicked by those of spinal cord problems, or of radiculopathy--damage to the nerve roots nearest the cord (a special subcategory of neuropathy). Symptoms can include pain, numbness, weird sensations (parastheses) . . .this is part of why investigations into neural symptoms are often so time-consuming (and costly).

If you haven't seen it before, go to the www.lizajane.org site--these spreadsheets were put together as a way of tracking just about any test that might be relevant to neural symptoms (and of suggesting tests to reluctant doctors).

What kind of testing has he had? He should at least be getting MRI's of cervical/thoracic/lumbosacral spine, and probably EMG/nerve conduction studies to see if any disruption in neural signals between spine and extremities can be localized (e.g., stemming from spine, vs. nerve root, vs. farther along the peripheral pathways).