The tiny bumps could be anything from a bunch of cold sores. However, it also could be something more sever. A bacterial infection could also be the reason for the bumps to appear.
They could be anything. You need to talk to your doctor about it. The doctor will be able to answer your questions. There maybe meds you can take to clear it up.
Everytime i get these, i have no choice but to wait about 5 days for it to fully go away. Oh yeah, and be sure not to rub your lips against rough material,
