That's the strange thing. We've had no effect on any mechanical issue, and yet the patient is better. So, looking at an x-ray the MD would say that because we had no effect on what the MD thinks was the cause of the pain, that we have not cured the patient. But if you ask the patient, they may believe, and rightly so, that they have been cured. If unpinching the nerve with chiropractic adjustments, surgery or other mechanical alterations have no effect and yet, moving the Qi does, then perhaps the nerve issue is not even true, but its all about the stagnated flow of Qi energy.
Same thing goes with internal medicine.
For this, acupuncture, and as often, herbal medicines are used. Internal medicine means things that aren't painful in the muscles or whatever. These are not necessarily pain syndromes, but all the other diseases and sicknesses that people get. Chinese medicine says that it is heat in the lungs. We give herbs to clear the heat from the lungs and the problem goes away.