(whoops,this is to contribute info to the website)
First, my lower lip became swollen for no apparent reason. Then most of the swelling went away but eventually it started to have thick crusting and became a chronic problem.
I'm currently using topical steroids and yeast cream(since my biopsy tested positve for secondary yeast) and I believe this is helping and even helped heal the outside of my lips for the most part. But the inside still gets white stuff which seems to be almost impossible to heal. Also, diet im sure does play some role in this so does stress etc.