Sorry but you're bringing nothing to the table at this point. My EC was caused by an allergy to my toothpaste. If allergies are in fact a cause, then eliminating the allergen for an extended period of time would be a viable solution, and it is in cases of contact dermatitis like mine. You discredit one theory which actually has evidence to support it just to pitch some broad idea that you can't give any specifics about. I don't think saying it's an internal problem that only affects the lips which doctors can't even diagnose is gonna cut it.