How do you get meds daily for something you don't have? Have you ever tried to get something you don't need? Do you think Drs don't know a junkie when they see one? To get an Rx for narcotics you need to see a specialist. If it takes six months to see one how does one do this daily?
It wouldn't surprise me that a doctor could misdiagnose an illness and keep filling the prescription- I don't think it would be impossible for a hypochondriac to be able to convince himself he's in pain or it could be a "ghost" pain. I know fibro myalgia used to be a tricky one to confirm. In medicine as in most other things there's probably exceptions to the rules.