Old data research prior to my diagnosis

I had found these pages just days before my diagnosis. According to my first EMG I should not have ALS as the following sugests. (First EMG was free from fibs and PSW) (2nd EMG shows fibs and PSW) There are only a couple of reasons why my 2nd EMG was so different from my first. 1. The first EMG was improperly performed and/or some errors in the computation of data. 2. I had been going back and forth from active denervation to no denervation and so on. Possibly from other trauma earlier in my life or actual MND that halted and then restarted? (UNKNOWN) Below was my original draft from earlier this year. Posted 02-10-2013 at 06:13 AM by jellis86 http://www.medhelp.org/posts/Neurolo...Ws/show/297362 http://www.teleemg.com/guides-info/p...-als/#faq_menu My symptoms are fasciculations and minor cramps I read somewhere that a clean EMG after 6 months of symptoms rules out almost completely the diagnosis of ALS – 1. Does it fit with your clinical experience? 2. Is it possible in your experience that after 6 months of fasciculation the EMG will show nothing but fasciculation (no fibs and positive waves) but later would show ALS (fibs and positive sharp waves or psw) 3. when you say that somebody with fasciculations has inconclusive EMG what do you mean? Does the definition of 'inconclusive' in relation to possible diagnosis of ALS includes actual fibrillations and psw or anything else - what would be inconclusive in relation to a person with fasciculations and suspected ALS? Answer : ALS is an elimination diagnosis, that is that we only make it after having ruled out other (and there are many) conditions which can mimic it. Unfortunately, frequently fasciculations have been the only thing identified with ALS. So the short answer to your question is do not mind so much the EMG as much as you should mind what your neurologist tells you and if you don't think you're getting the right answers, by all means seek a second opinion. Comment : So do you mean that frequently ALS patients do not exhibit PSW or fibrillations in their EMG exam? Answer : No, on the contrary, the fibs and PSW are frequently seen in combination with fasciculation in ALS patients. If the EMG is free from fibs and PSW it is reassuring.