i've had these acute sores that recur every once and a while. like maybe once for 2 weeks. they haven't gotten this bad. but i haven't showered in two days. washing seems to reduce these sores, but maybe it's just coincidence. i am asking because i am worried that it might be an std. they are always on the underside of my penis, which has led me to think that maybe the underside is irritated by being rubbed up against the scrotum or something.
please let me know what you think, and tell me what i should do.
here is a link to a photo, viewer disgression advised...