GBS/CIDP/Radiculoplexus Neuropathy

I was diagnosed in 1994 with GBS, subsequently with CIDP which has apparently now “burnt out” and Mayo has now diagnosed Radiculoplexus Neuropathy to the list. There is no identified cause other that the usual suspects, no known casual relationship and no known preventative measures. This has been a long 25 years. Wondering if anyone has seen this before? Doctors to date have no seen this happen before.