I have a few dry patched on my face. One crusts over and eventually flakes off . This has been going on for approx. 18 years. My Doctor, after a few years, used liquid nitrogen on the one spot ( I had only one spot at that time). My problem came back in a couple of years, and she used the liquid nitrogen again. It came back but we were moving and my new Doctor had it removed surgerly and said it was not cancerous. That was 4 years ago. The other day, I had that spot and 4 others ( which had not crusted over ) treated with liquid nitrogen.
My questions are, what is the problem, what treatment would you advise and will it come back again.