After several handjobs where my girlfriend just lightly ran her hand over it very quickly (kind of uncomfortable to be honest) I noticed the skin flaking off the base on the left side, as well as flaking skin on the left side just under the circumsized head. They looks to be like a blister. Also, a small, individual, stand-alone pimple with pus formed on the right side of the shaft. This happened the morning after sex where i did not proceed to wash myself after we finished. Monogamous relationship with my girlfriend and have not noticed a problem like this before. Can provide a picture upon request.