im 37 years old,about 6 months ago i noticed a white mark about 2mm
in size just above rim of the base of the penis head,at close inspection it looks like a couple of very thin white lines very slightly raised,in certain lights it appears to be a very faint line that goes right across the top side of the rim(corona) and fades towards outside, sometimes its hardly noticable apart from the bit i stated to start with which is slightly left of center.