Mine is sensorimotor axonal polyneuropathy.
The "sensations" had started in limbs, approx. 33 years ago.
They were very mild then.

It's gotten progressively worse over these 33 years... slowly.

I did a lot to try to intervene and sensory nerve regrowth had been noted on skin punch biopsies. However, at this point, the sensory nerve die-off is greater than any regrowth.

It's likely the rate of progression is multi-factorial in nature.
I am sure there are individual differences.

Warmly,
DejaVu