I've had it for almost a month now, but it disappeared for about a week and now it's back, in the same exact spot, with the same exact look. I have a doctor appointment on Tuesday, but until then, I'm really freaking out about it.
It's weird that it's come back in the same place, but it looks like the time I got poison ivy on my chin. It was horrifically itchy and seemed like it took forever to clear up but then it didn't come back. Glad you're going to see a doctor!