Chicken pox could cause an inflammation of the spine, and I am not certain about the recovery. A course of treatment with an IV medication should be considered. In the U.S. we use acyclovir. Chicken pox can also cause an inflammation of the blood vessels, and lead to ischemia. Without looking at the scan I cannot provide more information. Good luck.
I am from the Netherlands.
I can't answer your questions,but i had L'hermitte too
and no lessions in the brain and (spinal)cord.
Din't you got an spinal tap and exam.?
Good luck
Alph.