Hello @alangrd, I have had Erythromelalgia for about two and a half years now. Sorry to hear your daughter is having these issues. I was initially misdiagnosed, but went to Mayo Clinic in Jacksonville, FL and was quickly diagnosed. It does not sound like that is an option for you. What I can add with regard to genetic testing is that it may or may not give definitive answers. Because it will give positive results for about 80% of Erythromelalgia gene carriers, one can still have the condition and test negative. The test only checks on one particular gene (I believe it’s SN-9). That’s what happened to me. But my doctors still believe that a full X chromosome work up would have yielded positive results.
For your daughter, I can only suggest a log of anytime the symptoms occur. It occurs with exercise for her, but are there any other triggers? Too much salt, spicy food, sugary food, heat/humidity, stress, cardio/exercise, etc. can all trigger flares. Try and take pictures of the flares to show doctors. Also, what time of day is it worse? Erythromelalgia is almost always worse in the evening/night time. Of course, everyone is a bit different but I hope this may help you a bit. Good luck to your daughter on finding relief for her condition.