Hi @bb1, My PMR is currently in remission but I also have small fiber peripheral neuropathy. There may be a connection but I've never felt my PMR or prednisone treatment has had any connection with my neuropathy. Mainly because I've had neuropathy more than 20+ years that started in my toes and gradually got to my feet and legs. My PMR diagnosis was much later in life in my 60s and it's come and gone twice. There is another discussion you might want to read through here:
-- Peripheral Neuropathy - Result of PMR or Prednisone?
https://connect.mayoclinic.org/discussion/peripheral-neuropathy-8/.

Here's an older article that my shed some light on the question. It's not specifically about PMR but RA and I was told by my rheumy PMR is arthritis all over the body (layman's terms):
"Neuropathic symptoms are common in RA patients, and it is difficult to distinguish peripheral neuropathy symptoms from those of arthritis. Patients with RA, particularly elderly patients and anti-CCP antibody positive patients who complain of neuropathic symptoms should undergo electrophysiological examination."
-- Assessment of Peripheral Neuropathy in Patients With Rheumatoid Arthritis Who Complain of Neurologic Symptoms: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4026612/