What can cause skin abnormalities around the penis head?

[Spearhead1234]

For a long time, years even. I noticed it probably around age 13.  There has been this weird slit near the skin surrounding the head of my penis. It's not a cut, it's not herpes or and open wound per say. It's like a small opening. The best way to describe it would be like a needle pierced the skin, and the needle dissapeared but the part of the skin it pierced never closed up. There's legit two holes there. One on top and one on bottom, about a few centimeters apart. I can slide a surgical scissor blade underneath the skin and have the blade poke through the otherside. It's like a tiny tunnel I guess or like there was something there and the skin formed around it and never healed. I've only had sex with one girl, but I still had the slit there and wore a condom. It doesnt hurt unless I start messing with it or my boxers rub against it. Sometimes when I squeeze around it, white stuff comes out. Kind of like popping a pimple. It isnt really affecting my health to my knowledge and doctors wont do anything about it or really have an asnwer as to what it is. Most dont even notice it's there unless I point it out. It's not a pimple, it's not a wart or a raised part of the skin or a burn. My penis looks normal and I have been tested for std's and sti's and am clean. It's a tiny portion of skin that has an opneing on both sides. Like an iv needle but it went in one side and out the other, but there's no needle. It's just there and I have no clue what it is