I am 59 year old female, very healthy all my life except granulocytopenia at 11 and acute epstein-barr diagnosed in 1997 (3 years to 2000). Over the past 15 + years, I have been very active: karate, cross fit classes, weight and cardio training - very fit. The only flu I've had, even, was in August 2015. In November 2015 I recognized an ongoing, persistant fatigue, generally not feeling well. I gave up karate in January 2016 but continued my fitness classes & gym, as much as I could. I had heart issues and some chest pain and shortness of breath, too. I failed a stress test and was put on the drug protocol for that in October 2016 until I had the angiogram in November 2016 - all clear. In April 2017, I had Rhabdomyolisis, maybe due to a cross fit routine I did (really minor to me, but we don't know what else could possibly have caused it) ck levels went only up to 6000 and came back down to normal within a week or so. I then recognized that I had musscle loss .. and that muscle loss continues, slowly, to this day. I had an EMG and nerve conduction testing in August 2017 that didn't show anything abnormal and I'm scheduled for another one in February. I am having more difficulty getting out of a chair, going upstairs, in and out of vehicles. I also have general muscle aches, all over, and periodic specific pains in my muscles and joints, including hands and fingers. However, ck levels are normal & blood tests, I'm told, appear to rule out autoimmune disorders and anything to do with thyroid. The rheumatologist originally said he thought I might have McArddles, but then said no, I couldn't have been as active prior to now if that was it. I am also waiting to see an infectious disease specialist. I've had to sel my business as I cannot continue working. Any thoughts of what else may not have been covered that I should be looking at?