hi there, magnesium is required for a few different processes in our bodies (hundreds) but i think the majority of ms sufferers benefit from its value in relaxing spastic muscles. it also helps promote sleep at night, some people report better bladder control, less pain, less muscle twitching, easier breathing, reduces anxiety, reduces dysphagia, that kind of thing. reduces menstrual cramping, too, for those who are interested
magnesium does so much good for so many things, you pretty much can't go wrong by taking it. if you take too much, it loosens up the GI tract... so if you're constipated too, then you're in luck
in your case, it doesn't sound like muscle pain exactly - more of a skin pain? but if i'm wrong then the magnesium might help you guys out too. not least, because it plays nicely with the vitamin d3 and together the mag and d3 work great on pain reduction.
i've typed this many a time before, BUT...
ms patients are advised (by embry) to take 600-1200mg soluble mag per day. soluble forms include mag citrate for example. insoluble (they'll really get you running for the toilet) include mag oxide. mag is easier to absorb from food. high mag foods include nuts seeds and dark leafy greens like kale. stress makes you pee out magnesium. so does coffee. no doubt many of us ms patients and supporters are stressed and/or caffeinated enough to benefit from replacing some of our lost mag
magnesium is also removed during water treatment processes, because it clogs up the works with mineral scale. so if you're on city water, you're not getting what you would normally in ground or surface water. if you don't have white buildup in your kettle, your water is short on needed minerals.
if you decide to try out mag, don't take it all at the same time as any daily vit d3, even though the two do need to work together on some issues.
do take some of the daily mag away from the d3, since d monopolizes the magnesium interactions in your GI tract and doesn't leave any left over for other important mag-dependent processes.
hope that's useful to you guys