I have a problem that someone in here may know something about, I hope. I have an ulcer on my penis and want to know if anyone else has this problem (see attached link for pic). I have been to my doc, an internal Medicine doc and a Urologist . The urologist said he thinks it may be caused by my blood sugar being to high, I am diabetic....just diagnosed a few months ago. It looks worse than it feels. It gets irritated when I masterbate though. Any help will be appreciated. I don't have Reiters Disease, which is the link that had the pic. Here is the link: Reiter's Syndrome Picture : Penis Ulcer (Hardin MD / CDC)