If you've ever been to the doctor and he or she just can't figure out what is wrong, how do you feel? After all most doctors are incredibly intelligent people, but are not miracle workers when it comes to diagnosing problems 100% perfectly, every time.

The fact that we don't know what we don't know about the human body comes into play here. Areas like fainting, back pain, muscle aches and dizziness are known to cause problems with some physicians, who just can't seem to "fix" these problems in some cases.

But, having an investigative procedure that goes down the extreme detail road trying to find the appropriate answer may be well worth it if you are having trouble finding what your problem may be -- and how to fix it.