Hi. I have had 2 emg/nc and one ssep which is I think a more extensive emg type test and was much worse then the emg/nc pain wise. I have RSD in my inner ankle/foot calf of both legs now. The emg/nc dx with me peripheral neuropathy. So I have both RSD and PN. For me I don't allow docs to even touch my legs cause the pain it sends me into. These tests were preformed early in my condition along with almost every other type of test imaginable. From when I researched everyone has a different response to the pain. I have delayed pain as well so as needed meds were needed. You may want to talk to your doc about that if you don't have meds to take in a flare. Sometimes like for me this test was not given for RSD dx it was looking for other possible conditions. Sending good thoughts.