Hey deb. Sorry about your pain. I have both RSD and PN. That is part of why I is hard to treat me cause we dont know which is causing what pain or problems. I am no expert but I would think you can get muscle wasting from either because you are not using the limbs as much? Have you had nerve conduction or other testing? What made the doctor feel you have PN? Feel better

--can happen with certain types of peripheral neuropthy, if the motor nerves are affected; muscles may atrophy from lack of use and lack of nerve-signalling "tone".

It sounds as if you'd need a very comprehensive work-up, and a full range nerve conduction study/electromyography (EMG) would be a prominent test. And it shouldn't be done in any old office--a specialty center would be a better bet (NCV/EMG testing is notorious for wide ranging results depending on what conditions the test is done under and just who is interpreting).