Demyelinating process means the loss of parts of the myelin sheath which covers the nerves in the central nervous system (brain, spinal cord, and optic nerves). When some of it is lost or damaged, signals can become slowed or misfire leading to
symptoms found in several conditions, among them Multiple Sclerosis. https://en.wikipedia.org/wiki/Demyelinating_disease
But don't get too tied up in looking into this until you speak to your doctor about these results.