I have had twitching in my right deltoid for almost a week straight. It lasts for a few minutes and then it will stop and normally return in a few minutes but sometimes I do have breaks where it's an hour before it's starting twitching again. It must be doing it some when I'm sleeping because...
A week ago my left hand (especially my index finger) starting stiffening, some weakening, twitching during use to the point where it became difficult almost impossible to type. Today my right hand is starting to slowly do the same but not quite as bad. Can ALS spread that fast... in one week...