Welcome to the forum. I am sorry that you are having such a bad time of it right now. I also have Periferal Neuropathy. It got really bad in my hands and feet and legs. I had chest pains too and that turned out to be Pleuresy. I got really ill a few months ago with bad symptoms of shortness of breath, extreme fatigue, I could not go up a flight of staires and had trouble even getting out of a chair or bed. My tongue got really sore and looked awful. My Rheumatologist checked me for Pernicious Anemia and B12 deficiecy and sure enough I have that. I don't know anything about neuropathy of the chest and back. I imagine it could affect the nerves in your back and chest though, but I have never heard of it. I hope that they can help you with it. Keep posting. I am sure that Saysusie or Oluwa and some of the others will have more knowledge and can tell you more.
Lupus for many years. Like most of my life. Sjogrens that started at 35 and Scoliosis, Spinal Stenosis, Degenerative Disc Disease, Osteo-Arthritis of the spine, Ankylosing Spondilitis, Periferal Neuropathy, mild CP and now just recently diagnosed with PA. I had a disc replaced in December of 2007.
Plaquenil, Sulindac, Imuran, Celiac diet, Tramadol and B12 shot once a month.