So.. at the top of my butt crack and at the bottom I have had very itchy skin that is raises. At first I assumed it was a heat rash or something like that but it doesn't go away. It seems to be very slowly getting worse. The skin is bumped up and feels similar to multiple mosquito bites but they are consistent with little to no change. The skin often breaks and bleeds but there is no pain just the itch. This has been consistent for a couple of years. Any ideas......?