--for problems with nerve compression in the thoracic and lumbar spine?

The symptoms of erroneous nerve sensation can be caused, in the same parts of the body, both by problems with the central nervous system (brain and spinal cord) and problems in the peripheral nerves (all the ones NOT in the brain and spinal cord. Certainly systemic conditions can result in peripheral neuropathy, but so can more localized conditions such as compression.

What kind of testing have you had to this point? The search for causes is often long, expensive, and very much process of elimination, but a doctor should be making such statements based on something.