The skin on my penis head stings when touched, there isn’t bumps or anything just a tiny spot of elevated skin, looks a little similar to a scar, but not exactly. I had STD tests done a few weeks ago and tested negative for Chlamydia, Gonorrhea, Genital Herpes, Syphilis, Hepatitis, HIV, and Trichonomas Vaginalis. I don’t know what it could be, its barely visable and has been stinging for the past couple days, but only when touched.