I wish I knew. Mine I have had a year. I used to just have an occasional beat or twitch, now it's about everyday. It does not hurt but can be surprising when they suddenly start up.
Could be lack of b12 vitamins, I have low b12 count and i GET IT, DID some research and it does cause this
i think is lack
of some vitamins found in bannana patassium, eat bannan well and it will comesurate the effect