Originally Posted by mrsD

Dry eyes may be a sign of Sjogren's syndrome. This affects women more than men, and is autoimmune triggered. It causes neuropathy also.
http://www.mayoclinic.org/diseases-c...n/con-20020275

Tingling is a sensory symptom. When people become paralyzed, it is an attack on the motor neurons which cause movement.
These are two different nerve systems. The motor neurons have insulation on the long axons that carry signals, and this is called myelin. The myelin is not present on all sensory fibers.

Here is a link explaining the types of fibers of nerves that send impulses from the periphery to the brain (sensory):
http://faculty.washington.edu/chudler/cv.html

The majority of sensory fibers do not have myelin (if they do it is less than a motor neuron has). But some have a little. Myelin is shown in yellow in the link chart.
Autoimmune antibodies attack myelin and interfere with signals in those nerves.

There are also special clusters of nerves in a ganglion along the spine just outside the spinal cord. This ganglion is called the dorsal roots. Antibodies and toxins can attack there also damaging signals from the body to the brain.

This explains dorsal roots:
https://faculty.washington.edu/chudler/spinal.html

Most people can repair damages to both areas of neurons. But some genetically lack the enzymes to do this. Research in this area is ongoing now, on how to help those who cannot repair their damages when they happen. Those that can repair do take some time to do so.