I am developing a what feels like patch of firm dead skin of the upper part of my upper lip. I have only had immediate signs for two days. Yesterday being day one it slightly stung, and today it has developed a harsh texture. Visually it is just a bit red, but physically is tougher and rough. I do kiss on a daily basis, eat an average intake, apply blistex chapstick daily, and brush my teeth. If you could please help me with whether this is something as simple as chapped lips to an infection or a cold sore. That would be nice. Thankyou.