I was diagnosed with myatonia congenita about 1 1/2 years ago. At the time the only symptoms I was having was stiffness and pain from the myatonia. I have now began to have other symptoms that don't exactly go with myatonia congenita such as extreme sleepiness, weak muscles, hands not able to do normal everyday task such as buttoning/writing/holding heavy objects, tremmors in muscles all over body, myoclonic jerks 24/7, legs appear to be getting smaller. I had an emg run that showed the typical runs associated with mc and also my neurological exaim showed typical issues associated with mc. My question is "Has anyone else been diagnosed with MC and then later changed to MMD? Also do these new symptoms sound like MMD? I have researched MC and these new symptoms don't appear to be associated with it. I also have had fertility issues, am on a CPAP for sleep apnea, and almost every symptom associated with MMD. I have been DNA tested by The Periodic Peralysis Association and received a negative diagnosis for any of the periodic paralysis or paramyatonias. My doctors do not seem to want to further test me with the MDA clinic. Any ideas ore responses will be greatly appreciated as I am very frustrated. It has taken me several years just to get this far.