Medicine is full of mysteries, and some conditions are so rare or oddly named that they sound like urban legends. What would it be like to be allergic to water, or to watch your skin transform into something that looks like tree bark? For some people, this is a daily reality. Though their names often sound like myths or punchlines, these rare conditions are backed by real science and carry very real consequences.
Intrigued? Click through the gallery to discover rare medical cases that reveal just how surprising and sometimes unsettling the world of medicine can be.