Starting losing my strength early last year right around the time the cramping started. I think i have some mild weakness starting on my right arm as well as it's started to get the cramping too. I also have a little give in my left leg but it's not to bad as of yet. I hope you can find some answers soon to give you clarity. Not knowing what's wrong when you know something is has to be one of the most difficult things to deal with...hang in there.