Hello doctor I m a 26 year old male. I had a sexual encounter with an anonymous person a month back. 8-10 days after the encounter I started feeling irritation on my penis, and a lot of ulcer like small things developed on the foreskin(visible if you pull the foreskin back), and a little sweeping. I saw a doctor and he advised me to do an random blood sugar, VDRL, and TRIDOT. I took the tests 12 days after the risky encounter, all tests came negative. Before the results the doctor prescribed me zimvir 500 for 5 days. The irritation was completely gone. From the last one day I m feeling irritation again, though i can t see rashes or ulcers at the moment, but I feel the irritation. Could you please advice me as to what it could be?