Hi,
Personally, anything that causes me to worry for very long or is recurring, I have checked out by my doctor. You might have something like an old ingrown hair or damaged hair follicle that caused scarring? To get a definite answer, you would have to be examined by a medical professional.
Good Luck
i had the same thing, and i remember i noticed it probably 25 years ago. does yours seem to get bigger and irritated after sex or masterbation?
No it basically stays the same now,I've picked at it a lot so its scarred pretty badly, I'm pretty sure now that it was just an ingrown hair I was dumb enough to pick at