I had the same problem for 7 years. I tried every kind of lip balm, salve oil etc. etc., searched the web for a reason or cure with no luck. I Discovered quite by accident finally what was causing it. Last new years I went on a health diet, replaced all white bread & cereal etc with Whole Wheat products. Within 3 weeks of my new diet, my lips were the worst the've ever been in my life. The only change I could think of was all the Whole Wheat I'd been eating lately. I immediately cut out whole wheat to see if that would help because I was in desperate pain, and guess what? Within 2 weeks of cutting out the whole wheat, my lips were not only feeling better, but they were actually getting back to normal. My lips haven't been "normal" in 7 years. 6 weeks later and there are days when I dont even put on any balm now and that was unthinkable before. Apparently I had been living with a Wheat intolerance and had no clue. I don't know if this would work for you, but maybe give it a try, and good luck.