In my case,
ALS had been mentioned as a possibility, but I really didn't think I had it. My symptoms were so mild it seemed ridiculous to even consider it. Kind of like what Beth described, I was going in for a test that would distinguish whether MG or
ALS was more likely, but before even doing the test they did a regular EMG and on that basis immediately diagnosed
ALS. This was a complete shock to me, I had convinced myself that I didn't actually have anything wrong and it was all in my head. I actually felt guilty going in to the appointment, that I was wasting the doctor's time over such a small matter. I could hardly believe it when he made the diagnosis. In fact I am still doubtful some days.