Nov 9, - If white spots suddenly appear on your foreskin, it may signal an underlying condition. Penile papules are rows of tiny white growths around the head, . A testicular ultrasound is a test that obtains images of the testicles and Penile papules · Pimple · Molluscum contagiosum · Yeast infection. Jump to What causes pimples on penis? - This type of bumps usually appear with white color, they can be yellowish or even Pearly papules on penis.