The medical world is second to none. Just last year, for example, a 34-year-old old man developed an allergy to cold air. There was also a Brazilian fella who surprised his doctors with having three kidneys. And that's just the tip of the iceberg. There are plenty of memorable cases that continue to surprise us to this day. And you can find most of them on the subreddit r/MEDizzy. It's an online community created for medical professionals to discuss everything and anything that crosses their…