Hi, my name is michael, some time that I have this in my penis, is rough and painless, a bit annoying. I have an injury like that in the frenulum but smaller. Thanks!
Have a single painless ulcer on the penis? Consider syphilis. The painless ulcer is called a chancre and often associated with large, nontender lymph nodes in the groin. The lesions will go away on their own 3-6 weeks after appearance. (but that doesn't mean the infection is gone!). If I were you I would get blood work and have the lesion biopsied.