so I took a picture, http://img710.imageshack.us/i/img0862n.jpg/not sure if that's allowed but that's why I didn't directly embed it into the post, anyways, I just noticed this redish rash towards the left side of my penis when the foreskin is retracted, I guess I could classify it as slightly itchy but nothing too bad, also wondering why the actual edge/corona? of my glans is a deeper purple color than the rest of the head? Is this normal? I've only ever had one sexual partner... I'm thinking it's not an STD because of this fact and am leaning towards it being balanitis which apparently happens when you have poor hygiene... I've only recently discovered that I need to retract my foreskin to clean underneath I'm 18 years old, my parents never said anything to me about this so I feel stupid now for not knowing, there's no smegma under there now of course, I clean daily now but I literally just started cleaning properly like two weeks ago so all this time you know... this red rash looking thing wasn't there before and that's why I decided to seek advice, thanks!