Could well be the case, but the PN is a symptom and not the root cause. I think you've made the assumption that the cause of the PN can't cause other systems issues? There's reserach showing toxicity can affect the CNS and other systems - including the heart. My neurologist doesn't know what's causing my PN. I'm a complicated case, also being an epileptic [hereditary] and having suffered dozens of significant concussions during my life.

The latest is that they are (i) going back to screen the very high levels of protein found in my CSF four years ago, (ii) undertake a further [comparative MRI], and (iii) heart tests.

Let's see if they can find some further clues...