Hey deer,
No, I only had problems with my legs. Mostly at night. Almost like a muscle spasm where they would "twich" with the mostly calve spasm. I really do'nt remember it affecting my arms. But, I will say that it still be possible. Actually, I can remember where my shoulders would do that too sometimes. And that is sure part of you arm. Again deer, best source is your doctor. Because I can actually say, since being recently diagnosed with MS, I'm not sure both are related.
MsSky
Disclaimer: My posts on this forum are by no means a diagnosis. Just my opinion and support. Please see your Physican for conclusive facts and proper diagnosing.