28-11-2011, 01:37 AM
As far as I can recall, I have always had a darker pigmented line down the length of my penis and scrotum. That line is totally natural and nothing to be concerned about. That is part of the perineal raphe, a ridge along the median line of the perineum that runs forward from the anus. In the male, it is continuous with the raphe of the scrotum and the raphe of the penis.