I once completely lost the hearing in my right ear. It was muted one day and completely deaf the next. I made an urgent appointment with my doctor and he said,

I once completely lost the hearing in my right ear. It was muted one day and completely deaf the next. I made an urgent appointment with my doctor and he said, "It's a virus, you're hearing will return in a week." I said, AYFKM? No, he wasn't kidding me. A week later, it returned in full.