This isn't when erect but always? Is there a bend in it? Peyronies Disease is when you have scar tissue in your penis and it causes things like a bend. https://www.webmd.com/men/peyronies-stright-talk#1 Is this situation new? 10 percent of men it will straighten out on its own. If it only happens during erection, take a photo of your erect penis and show your doctor. If it impedes you from having sex or is painful, they may refer you to a urologist for evaluation of the extent and come up with a treatment plan of which there are a few options.