question: I have a round open sore on my penis shaft about the size of a pencil top eraser. It is painful when bumped. It also scabs and then when the scab comes off it looks sort of whitish. The sore is slightly raised around the edges but otherwise basically flat.I visited my doctor and he tested for a host of stds. All results were negative. He is suggesting that I may need to see a specialist. Meanwhile, I have been applying a triple antiobiotic ointment to encourage healing, but this does not seem to be helping any. The sore has existed for about a week now with no real healing.I will go see a specialist as suggested, but just to put my mind at ease, is there any idea what this may be?