Now this is something totally opposite of something I just read and I freaked out. My twitch in my forearm only happens when I slightly flex my hand or do something where my hand flexes and it pretty much only stops when I unflex my muscle. I read that it was called a contraction fasciculation and that this was indicative of ALS. I had finally gotten myself a little less anxious about this whole thing and now I'm nervous again. Plus, the area on my forearm where it constantly twitches is also more indented than my other forearm which leads me to believe it is atrophy. NO weakness though.