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Dagmar and others I am Fred diagnosed in Jan 2024 as probable but with possible onset in 2019. I have lost strength mildly to moderately in my hands and shoulders and arms and symptoms come and go. My worst symptoms are strong twitching since 2019 which varies and has receently begun to spread to other areas and cramping when I do certain movements. Is this a common problem with slow progressors, or am I no longer in that category?