Question. There are a bunch of small white spots on my penis. I went to a clinic because I thought I had an STD but they tested me and said I don't have anything. When spots, lumps, or rashes appear on the penis, at the base of the shaft of the penis—these of the penis. Sometimes the bumps have fine white streaks. Various health conditions may lead to white spots, dots or patches on penis, penile shaft, penile head or foreskin. Whether the spots are painful or not, they may call for urgent medical attention.