I have had Myasthenia gravis for 11 years now, all along doctors have known I have had overlap disease. Well neuopathy & myopathy has just shown up on my ncv & emg, on top of the jitter from the myasthenia, I have had myotonia in my hands for 26 years now, fingers are curled. Doctor did testing, because of worsening of cramping of legs & feet, weakness, paresis, foot drop, I have had muscle twitching throughout my body, pins & needles , with heat in my legs & feet for 7 years now. well I guess I will know my overlap soon, after a few more tests, I am sure. Would love to meet you all !