I have been having all over body twitching that I usually can't see, but feel. Now I have been seeing it a few times in my eft interosseous muscle. Ihave been on and off again having tingling and numbness of hands and feet. My left middle finger feels stiff, but I can still move it. I am scared that it'll stop working and that I have ALS. The finger also has pain as well when I flex it. I am wondering how long can a person have fasciculations before it progresses to weakness. Can a person having trigger finger be a symptoms of ALS? Can a person have weakness without atrophy?