Last week, in the evening, a large whitehead suddenly appeared on my lower lip in the span of about three hours. When I say on, I mean on the exterior of my lip. I popped it (wasn't very hard...just touched it), and it went away. Tonight, it started cropping up again, and I popped it twice. Each time, the contents look just like any other whitehead I've had. The area doesn't crust over or anything, it just disappears.

Should I be worried about this? Or do pimples actually happen on the surface of the lips? I've just never had one. Any advice on how to best heal this? I obviously don't want to put anything on it that I may accidently eat.

I'm really confused how this happened...I just recently came off Biaxin, could that have something to do with it?