Hi and welcome,
Your MRI information of "several supratentorial punctuate T2/FLAIR Hypertensities." breaks down to....
Several - unspecified number
Supratentorial - concerns four large areas ie
subcortical area, periventricular area, deep white matter area, and corpus callosum
Punctate - pin point - typically smaller than 2mm.
T2/FLAIR - MRI sequences or imaging patterns used (ie. T1, T2 or FLAIR) to highlight different types of tissue
Hypertensities - Hyperintensity on a T2 sequence MRI basically means that the brain tissue in that particular spot differs from the rest of the brain ie lesion
....which in of it's self isn't really saying anything specific enough to put MS on your list of potential causes, 'punctate' hypertensities are very tiny and typically more micro vascular and migraine related than anything else.
Tiny lesions less than 3+ mm are not usually associated with neurological conditions like MS, but MS isn't completely out of the possibilities because by not being more specific in location than 'supratentorial' it could mean these punctate lesions are located in more than one of the supratentorial areas (subcortical, periventricular, deep white matter, and corpus callosum)....although having said that, it's likely there isn't any in the corpus callosum because of it's higher association with MS and your report should of mentioned lesions specifically in the CC if there were any.
MS Mcdonald criteria consistent/suggestive MRI evidence; 1 or more T2 lesions in at least two out of the four MS specific location; periventricular, juxtacortical, infratentorial, or spinal cord
If you were able to follow my wishy washy explanation, the crux of it is that your MRI information isn't really informative enough to be suggestive or consistent with neurological conditions like MS, and whilst MS can't be ruled in or out with any confidence, your MRI results alone would more likely imho be pointing away from conditions like MS, rather than towards...
Have you had any abnormal blood test results looking for viral, vit deficiencies and other autoimmune explanations?
Hope that helps.....JJ