About 2 years ago, I was eating a hot dog and by accident, I burned my lip because it touched my lips. The very next day I had bumps on my lips and spot where I burned myself was very dry. My lips eventually started to peel off brown flecks. After using tons of chapstick, it went away after a week or so. However, ever since then, everytime I have eaten a hotdog my lips did the samething. Now I have stopped hot dogs but it is still happening. I went to a regular doctor and he said they were not cold sores. Then I went to an allergy doctor, I found out I was allergic to black pepper, but I have been eating black pepper my entire life with no problem. I did what the doctor said though and I stopped eating black pepper but my lips were still getting affected. I know it happens if I eat hot dogs and many other heavily processed meats. It has recently happened after I had some limeade and it touched my lips and I felt my lips burn. I am willing to avoid any food or chemical to stop my lips from getting affected, but I don't know what to do. If you have any advice, please let me know.