Hi I Did review your concern. Your problem of getting tired and fatigued and pain in muscle can be due to inflammatory muscle disease or mitochondrial muscle disease and it can be tested by oxidative enzyme test using NADPH and also by certain special stains and electron microscopy. similar findings can be seen in some glycolytic enzyme disorders. Once your diagnosis is confirmed the doctor willl manage you accordingly. I hope this helps Wish you all the best. thank you for using health care magic.