there's a large constellation of symptoms associated with ms, and a large constellation of nutrients that are known to be suboptimal in the typical ms patient. your list of symptoms sound like they should be at least partially related to nutritional status. might be a useful line of investigation.
magnesium is one that is commonly suboptimal in ms patients. here's a list of problems that can occur in magnesium deprivation, and this is just from a case study, single patient experience:
"cramping, nystagmus, tremor, clonus, myoclonic jerks, hyperacusia, Chvostik sign, hypertension, tachycardia, and an acute organic brain syndrome"
serum magnesium is a simple test too, same problem with the normal range though. you have to make sure the lab's range matches the literature, and you have to be in the top end of the literature's 'normal' range.
went for a hunt on zinc status in viral meningitis. have found this study before, not keen on the lack of a *healthy* control group, but still it has some useful info
Hypozincaemia in febrile convulsion http://www.ncbi.nlm.nih.gov/pubmed/8789769
average serum zinc in bacterial meningitis patients was 0.98 mg/L, and in patients with viral CNS infection it was 1.06 mg/L
so that's 14.9 umol/L for the bacterial patients, 16.2 umol/L for viral patients. in research of zinc levels in healthy controls you can consistently find levels over 18 in adults, and in one study i found re children, the average serum zinc level in healthy controls was 20.5 umol/L.
could be worth having a look.