Doctors may not always be sure about what's ailing their patients

For the lay person, physicians always seem to have the right answers. It’s all self-evident. You feel unwell and quickly make your way to the doctor’s. Your symptoms get a thorough review, then you end up with a physical medical exam.
That may just be enough for the doctor to give a diagnosis, and propose a cure. Other times some tests will be necessary to confirm the suspected diagnosis. But can you always be sure there was no guess work involved in coming up with a diagnosis?

It might surprise some to know that doctors work more with probabilities than certainties. The human body is so complex that it’s never easy to break it down into separate entities.