During the Middle Ages, the difference between what was real and what was paranormal was not always unambiguous. This is especially seen in the perception of the cause of sickness as well as the unintelligible remedies believed to restore the health of suffering patients.
The underlying principles of medieval medicine were the four humors: black bile, yellow bile, phlegm, and blood. The balance of these four allowed for a human's overall well-being.
The Humors
"The theory of the four humors arose out of Hellenic philosophy in an attempt to relate all things to universal laws" (Cameron 159…
