Dry patch on lip?

I have this dry, flaky patch on my upper lip. It doesn't itch or hurt and it's not discolored. Has anyone else had this? I haven't put anything new on my lips. I put chapstick on every night before bed. I've never had skin problems with lupus, but maybe this is the beginnings of something? I'm going to try some cortisone cream on it tonight and see if it goes away. I go to the rheumy on the 19th so if it's not gone by then, I'm going to let him check it out.