I've never read anything on this but I think I have an issue that I need help with. I seem to have a very sensitive top quarter to third of my penis. When my girlfriend is giving me head, if she concentrates on the top, I get a sensation that I would not consider pleasurable. It almost hurts, but it's not really pain either. It's almost like I'm ticklish? I'm honestly not sure how to describe it. Anyone know what this is and how to "fix" it?