I m in my early twenties, I have a black spot in the middle of my right leg, a little bigger than a size of a quarter. I ve had it for about two years now. It dosent itch as much a year ago,now just occasionally. I ve ignored it this whole time thinking it would go away on its on, but its gotten darker and the skin is now rough. What could it be? I m worried that it will never go away. Its not painful and I don t even know how I got It in the first place, I know its not from an injury