slowly progressing polyneuropathy

[Scootwagon]

My doctors have ruled out most of the common causes and have decided not to treat me.  My neuropathy started in my feet and over the course of six months has slowly spread.  My nerves are demyelinated and reflexes slowed. Now my feet are numb, my calves are burning, my knees tingling. My hands are tingling and some fingers are numb. I have tingling in other places too now, lips.  So what I am wondering, well, if this is going to continue why not try some kind of treatment and see if i respond?  The only idea we have is that the PCSK9 inhibitor i have been taking is the underlying cause of my neuropathy. And I have seen a case online where they were successfully treated using IVIG.  But my case is slower to develop and my symptoms not as bad, so does that mean i should not be treated?