I'm not quite sure how this happened. These kind of things tend to freak me out. But when I was going through my notes on story ideas, I discovered that I have four ideas for really freaky magical diseases.
Whyyy TT^TT
Some of them are freaked-out versions of real-world parasites. So I blame biology.
That being said, I have no idea how I'll end up using these in stories. I'm kinda afraid to figure that out.