if that was the case i guess ec would be more easy to be fixed. from stopping the trauma and rubbing and applying a good steriod based cream and some good moisturizing for a few days but its not.
during ec i had a girl friend and i kissed her alot so there would of been alot of rubbing in the process. so maybe thats caused this but unfortunately i believe lips should easily heal. i still strongly believe ssomethiing is causing this ec. for me at least i was fine one daay with 100% good lips and then the next day bang ec!
so im unsure about trauma and if we stop the trauma the lips should heal. but they dont