Yeah that is how I got mine too from biting my lip and everytime it would heal I would wipe it off with my sleeve and slother some more chapstick on my lips eventually I would drown my lips in chapstick and when I ran out of it that is when thing bloody thing showed up and severly cracked my lips and fell off in crusts. Now they are healing :) Keep in touch!
I completely agree with you! people who got this from other than chapstick/biting have to work internally as well as externally. Do your lips crust like crazy or a single crust?