Pimples can occur anywhere on the body, including the genitals, Learn more about the causes of a pimple on the penis, and the treatment options, here. to know if a growth on or around the penis needs medical attention. Pearly papules. Pearly penile papules are also normal. They are very small bumps, the same colour as your skin, but with a pearly appearance. They usually appear around the glans (head) of the penis in a row.