Learn how to identify and treat Fordyce spots on the penis. Everything you need to know about these small yet embarrassing bumps in this intimate g: brown | Must include: brown. Fordyce spots. Fordyce spots are visible sebaceous glands and occur along the shaft of the penis (Figure 2). Fordyce spots are more easily visible when the skin is stretched, and many patients may describe them as a lump that appears during an erection. Spots may also appear on the scrotum.