Medicine, like other branches of science, has the power to explain some of the most unusual ailments human beings can experience (though, to be fair, there have also been several medical devices that are more than a little horrifying, particularly to modern eyes). While many medical conditions are easily explained, and some appear quite normal, there have been, throughout history, examples of baffling medical cases, many of which retain their power to fascinate. Some of these remain mysteries even to modern science, while others have been rendered explicable and understandable by various discoveries and developments in knowledge.