I have this constant fear of motor neurone disease//als i have twitching in my right arm and legs. Aching right leg. Feel week on riight side too. Everything feels heavy in my arm, and i am so worried about it, have had 2 ecg both clear. Blood test clear even a strengh test which was fine. But i cant shake it, even writing made my two fingers ache. Has anyone got any advice on this as its really took over