Have you heard the term, "Curiosity killed the cat." ? That's what you are doing to your psyche if you continue down this path of trying to understand rare case studies of atypical ALS presentations. Ask TDoc, myself and others. It's not a fun road to travel. I wish I would not have taken that route but I did and now its too late. Without going into detail, because this is not an ALS site, this is a BFS site....the term "clean" with regards to clinical and EMG and NCV exams is purely subjective. It should only be used by doctors who are neuromuscular specialists and not amateurs on a website or people with a deadly disease or a benign condition. There are several things that can be evident upon clinical exam that are indicative of a neuromuscular condition and several things on an EMG and an NCV that can be indicative of things to come. EMG's are predictive in many ways, more for those with disease and weakness already present, however they tell the doctor what is happening NOW. They are able to tell with absolute certainty what is happening to your nerves and muscles at the time they perform the exam.That is where is it comes down to the saying that every veteran will come back to on this site..."TRUST YOUR DOCTOR." That's really all that you can do. If you don't trust him, find someone better. You should NOT stop posting. I would not say that. I would say to STOP digging. Stop trying to understand it all. The head of the neuromuscular clinic at the Mayo told me point blank, "We really don't know much about ALS." So there, straight from the horses mouth. If they don't know, trying to understand the pathology yourself is going to be fruitless and draining. Please trust me on this point. I have made this mistake personally and it will keep you in loop that is difficult to break. I am in therapy myself too because of this incessant need to understand it all. Again, I said what I did out of tough love. Also probably said it because IMO your BFS sounds very mild in comparison to myself and several others I know with BFS. So please feel relief knowing that you are not anywhere near the intensity on the BFS spectrum that many of us deal with on a daily basis. To say BFS is not a true condition is incorrect and asinine. There are case studies from Harvard Med dating back to the 1950's with patients diagnosed with ALS and it turned out to be BFS (or benign fasciculation) just because the condition was not as well understood as it is today (and is still improving). Your case is very much typical in presentation of a benign condition and with time you will learn to accept that.