My husband has a score on the rim of his his penis with a scab on it. The skin around the sore is very dry and wrinkled, as if all the circulation around that area has dried up. He is hesitant to get a medical diagnosis, but I am wondering what has caused the sore on his penis. During the time it appeared, we did not have sex for two weeks (at his insistence), which is making me wonder why does he have a sore since we did not have sex during the time it developed. What could be the causes of his condition?