Annie, maybe you can help. What is fatigability in muscles? Can it only be seen with a SFEMG or EMG?

The MG Expert here in the Netherlands has declared that I do not have a Myasthenia, because the blood tests were negative, and I don't have a clear ptosis. I do have Vit D deficiency, which they are suggesting is the reason for my muscle weakness.

But one of the other physical tests that the neuro did was to push against resistance, which I tried my best to do. But after a few seconds my "effort" failed completely. To my simple mind that would be fatigability, but apparently the reverse is true, according to the neuro.