Hi Intl Trainer
Welcome to NeuroTalk
.
As far as I can see the role of IgM specific for TS-HDS in Axonal Sensory Neuropathy is poorly understood.
This paper might help both you and your neurologist
Clinical and laboratory features of neuropathies with serum IgM binding to TS-HDS. - PubMed - NCBI.
Best wishes.