I wrote a post several months ago about how a rash appeared next to my…

I wrote a post several months ago about how a rash appeared next to my mole. It reappeared again at the same spot after so long. Is it possible to completely cure lichen to prevent future outbreaks? The last time I didn't apply anything, it went away on its own. It flakes around the edges and has crusts. It really looks like lichen.