The other day after walking around the park, when I got home I noticed that I had a patch of skin on my right testicle where the top layer of skin came off. The patch is red, oval shaped and kind of moist where the skin came off. Now it has dried. Since then, the area has turned brown, dry and cracked. Any idea what this may be? I have had many blood tests done for HSV in the last month and all have come back negative.