

Melasma? Asian brown skin.
It appeared when i was in my high school (and has been there since) I'm in my mid thirties now. It covers whole upper back and back of my neck, back of my upper arms and half back of forearms. May be a bad tan could've provoked it but i don't remember the reason. When i noticed it, it was already too late. It didn't spread, never became darker or lighter. That's probably why no derm ever commented on it. Once one of them told me that they will take a sample of my skin (like take a piece) to test what it is and i never went back. One of them gave me a whitening cream that i used on my forearms for 7 to 9 weeks and then stopped because of no difference.
I am using hydroquinone+ tret now for almost 3 weeks after reading some good things about it.
(In pics, left is my leg and right my arm, the other pic is just my arm)