I've found a painless ulcer where my penis head meets the foreskin, and it's really got me worried. I haven't had any sexual encounters in the last four months, just been on my own, you know, self-masturbation. What could be causing this?
Since you're experiencing an ulcer-like lesion, its important to get a proper diagnosis from a healthcare professional. They may take a swab or perform an examination to identify any infections or other underlying conditions. If it doesnt improve or if you experience pain, discharge, or other concerning symptoms, its best to seek medical attention as soon as possible.