A few months back I noticed a change in the shaft of my penis. This occured after allowing a women to perform oral sex while not wearing a condom. Nothing happened at first but then a month later my penis became dry and flaky. I've seen several doctors and even had a Cystoscopy, yet they say nothing seems wrong. I recently took pictures and its especially dry and flaky after showers but on a normal day it just looks like rough skin. I was thinking it could be a yeast infection?? Anyone know what this could be? I'm 22 of age and I provided pictures.