Last week I had a bit of a cold, and woke up with a weird rash on the inside of my lower lip. There were hundreds of these tiny clear bumps. It wasn't painful, but very annoying. It cleared up after 3 days. Since then, however, I have noticed that the area feels very dry, and seems to be exacerbated when I eat/drink hot things, chew gum, and after I brush my teeth.
This is really troubling me! I've never experienced anything like this before. What could be causing this?