Not many conventional doctors seem to know what is connected to the lips to make them peel, not even GI doctors I see. The only doctor who connected peeling lips to an organ was an allergist I saw who said elevated liver enzymes can cause peeling lips. I had slightly elevated liver enzymes due to celiac disease. But I know the intestines or digestive system can be related to the condition of the lips. In chinese medicine, it describes which organs are related to the top and bottom lip. Could you verify with her which organs can cause inflammation on the lips (the top and bottom lip might be affected by different organs) if some people have a problem with an organ instead of just an allergy to something. Messed up intestines can cause allergy sensitivity, though.