Since Dec 20th.. I have been having twitching/ vibration sensations left side of pectoral muscle area... it comes for like 2 4 seconds and stops... since the 20 th of Dec. it has happened about 8 days for those seconds overall and today it has been going on and off every other hour.. Is twitching/ spasms like this in ALS ? I had a clean blood test from Primary Dr. yesterday..liver, kidney all good, still waiting on thyroid test though. Is this good that blood tests were normal? and x ray? I have no trouble with hands or feet...possible anxiety making me feel fatigued and tight in muscles.. anyone please help..