On and off symptoms for 5 months

Afternoon all,
51 year old guy recently diagnosed after 2 MRI scans, a lumbar puncture and tests for a few hundred other conditions!
My numbness started last May but a couple of months later was pretty much gone……since then it has come and gone and right now it’s more of a hot, fuzzy sensation.
Is it common for episodes to last this long?

Hi

I have been told I have CIS at the moment.

I had numbness / coldness around eye and mouth.

Thats comes and goes too, started in April this year. I am 57.

Yes, they can do.