Here is one site concerning EMG/NCV testing.

http://www.hopkinsmedicine.org/healt...emg_92,P07656/

The test may or may not be painful. Sometimes, it depends on who is administering it. Let them know if it is painful.

I will never have another EMG/NCV test. I do not have to in my case as it is mostly for the benefit of the doctor. I know that CMT is progressing as it does and I do not need another test to tell me that. A top CMT neurologist told my support group this as well. It was painful for me. However, I cannot see that it would make matters worse. Just my experience. I know others who have had it are fine and for some others it was painful.