I dont think nightsweats are a symptom of MS. You could be perimenopausal, perhaps you should see your GP and discuss with them. Its not necessarily normal to sweat at night especially if the temperature is cool…i had the night sweats after my hysterectomy it was horrible…
I know the article you linked to mentioned night sweats, but in the years i have talked to people I dont think many have complained about it, certainly no men anyway, so do wonder if it is linked to hormones perhaps triggered by MS?