Sorry to be blunt, but what a load of crap! When I had a noticeable relapse in August 2019 (diagnosed Jan 2020), it’s because everything from my belly button down,was affected identically. Thats both legs, knees, feet all suffering the same fate.
At first I was told it might be anxiety, 1 month later they found 1 old lesion and 1 new lesion on spine during a spinal MRI. Then in Dec 2019 they found another 2 on my brain when doing the brain MRI.
He’s either an idiot from his remark or simply just distracting you from the possible truth.
I genuinely hope you don’t have MS. and you get some answers soon.