Can relate to this exactly with my experience, however not following an illness. 35 here also and up in Glasgow.

Only thing found with me was low folate which has been corrected. Spinal MRI clear. Had many neurological symptoms, which have come and went. Tethering over what it could be. I've went through the lot from stress to MS, to peripheral neuropathy caused by folate deficiency. Still no idea.

Going through NHS at the minute with neurologist, but painfully slow (pun intended). Frustrating thing is I have private healthcare now through a job promotion and can't use.

I am also going through a supplement programme shortly, and will update as to how this goes. Main ones being R-ALA, omega fish oil, magnesium, acetyl l-carnitine and a host of B vitamins.

Hope all is well with everyone in the meantime.