I am 55 years old and never had this problem until a year ago. I have seen 2 Urologist and they both say I do not see anything wrong I told them that my penis skin on shaft tears when getting and erection and sometimes it feels like it is over filling with blood. Like you blow up a balloon to normal then overfull it and it tears and takes about 3 days to stop hurting. I also notice that sometimes I will get this ring of tight skin that forms like a collar around the shaft near the rim of the penis and it hurts extremely to try to roll the skin down and most of the time it will not move but the pain is intense. At one time it would have red bumps on the rim on one side and felt like the erection was crooked and leaning to one side and over hard if that is possible. My regular doctor increased my blood pressure Medicine to see if lower my blood pressure would help. Not a chance. I can not find out what is causing the problem. It only does it when and erection occurs. I am circumcised but it also feels like after and erection is achieved there is no skin movement, for example if you try to masturbate and pull the skin back and forth there is none or very little movement and the rim gets very tight and hurts but the tearing is near the base and midway up the shaft. Someone please help because even when having a dream and getting and erection while I sleep I pay for that for 3 days of pure pain.