I have rsd from my neck to my left arm

I have been concerned about twitching in my left arm/hand and left leg. I was looking up MS, because there is history of that in our family. I found out that tremors that are not there at rest but start when you try to do an activity are a possible sign of MS, but tremors at rest that stop when you try to do something can be a sign of Parkinsons

Ask your doctor......that's my plan when I get back into the pain clinic