Do the diagnostic procedures themselves complicate the treatment or aggravate the disease or its symptoms?
Diagnostic procedures do have risks from the anesthesia or from a surgical complication, but there is no evidence that anesthesia or surgery per se aggravate the disease. I know one patient who had extensive tissue of Idiopathic FM which surrounded the windpipe and a surgeon tried to remove it all surgically. The surgical removal was associated with rapid regrowth of new fibrotic tissue back to its former extent within just a few months of its removal.
