Merlosis
Noun: A medical condition that causes writer's block, mood swings, loss of magical powers, and procrastination. It is typically identified in authors of successful, yet unfinished fanfictions.
"Sorry I haven't updated in a while, I've been diagnosed with merlosis."
"I was reading this really cool clopfic, but it wasn't finished because the author has merlosis."
"I was reading this really cool clopfic, but it wasn't finished because the author has merlosis."