(RSD, or reflex sympathetic dystrophy, is often referred to know as Complex Regional Pain Syndrome, or CRPS, and MGUS stnads for Monoclonal Gammopathy of Uncertain Significance, which involved the production of rouge, monoclonal antibodies that cna cross react with nerve structures and produce neuropathy symptoms:
http://www.neuro.wustl.edu/NEUROMUSC...tml#idiopathic
http://www.neuro.wustl.edu/NEUROMUSC...y/mprotein.htm