Don't have any idea what kind of disease I had on my penis, can somebody help?

My penis glans turns dark only around it not the center.

Around 9 years ago I got circumcised 'coz of silly believe and strict parents. And around 8 years ago I feels itchy, as a shy-kid and not an open person even with parents, I let it happen and tought it was a normal itchy that only happen often.

Now, it turns just like the pictures. It really hit my self-estem.

*I live on tropic location & high humidity.

Hello.   I do not think that being circumcised cause anything.  It is the pigmentation of your own body.  Some of the pigments did not get to the tip  You will be fine.  Don't let it bother you.  Good luck  ken   

Hi Its just a pigmentation thing you have going on, and your find as you get older your get more of it, not much you can do for it.

Just hope your not a naturist who loves to be in the sun as it will burn.