I had the same lip symptom as yours and I don't know exactly what this lip disease is. It occurs occasionally and cures itself within a week or so but I found a cure for it. I don't know if this works for you but every time my lip disease occurs, I usually cure it with Petroleum Jelly every before bed time and it heals the rash 100% within 2-3 days. I'm still trying to figure out what is the cause of this lip rash of mine.