If I had an open wound on my body, I would imagine rubbing excrement in it would cause infection. For hemorrhoids, it is often the excrement that causes the bleeding as it rubs itself on the wound. How are hemorrhoids so common but infection from them not?
In: Biology
Apparently there is a medical condition called an anal fistula which is basically an infection that leads to a tunnel from deep inside your rectum to an outside spot somewhere near your rectum (but could be somewhere further too). The procedure to resolve this is called a fistulectomy which involves having the surgeon just opening up that tunnel and leaving the wound fully exposed until it heals on its own.
Imagine your rectum having a deep surgical cut that’s just left open until your body does its magic.
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