Hello, recently I’ve noticed dark park patches of skin on the tip of my penis. They used to be bumps but they have gone down a little bit but it’s more of redness now. Looks a little inflamed to me, but it’s healing. It doesn’t look like much when my penis is erect. I mainly notice the color difference when I’m flaccid. There also is a little patch of lighter skin with a darker outline/ring near the urethra that I do not know what it is. The skin in the patch looks different and It starts to flake a little so it must be dry. I suspect it all is a rash or possible yeast infection. No other symptoms besides the skin color changing. I do plan on getting STD tested soon, then seeing my GP if those results come negative. But was curious on everyone’s input before I go in and explain myself.