Originally Posted by mrsD

There are 4 types of afferent neurons in the periphery ...and 3
of them are myelinated to some extent.

Here is a link with illustrations showing this:
http://faculty.washington.edu/chudler/cv.html

So demyelinating factors can affect the axons of these 3 sensory fibers.

Doctors don't explain this to patients, and sometimes I wonder if they even know the distinctions themselves!