I was diagnosed with lichen planus many years ago. I was given Fluocinonide gel USP, 0.05%. I works overnight like a charm. I will not go anywhere for too long without taking it with me. It was found that I bite the inside of my check at times especially if I chew gum. I no longer chew gum. As we age, our muscles begin to sag (yes even in our face), and as a result we have to pay attention to our back teeth wearing and getting sharper around the edges. The dentist can round the sharp edges off. I know just how painful it is when we get the open sores in our mouth. As an FYI, should you get the script for the Fluocinonide, you will read that it is for external use only. Since everything we put on externally goes into our pores and into our body, I was not worried about reading "For external Use only". I am sure the Oral Surgeon would not have prescribed it if he felt there was danger in using it in my mouth. Good luck.