I have a horizontal crack on my glans that runs between the glans and corona. It appeared overnight when I was 14, without any pain or bleeding. I have been assured by 4 doctors that this is a normal penis-head variant and it is just the way I am. In short, it is nothing to worry about. I am fine with this, but what is the medical name for this crack? For want of a better name, I call it a circlet because it is the part of the crown (corona) that rests on the head (glans).