Relax! 5 breast “worries” that are really no big deal at all. Extra nipples – Up to 6% of women are blessed with at least one extra nipple. Usually harmless, they’re often mistaken for moles, says New York City dermatologist, Bruce E. Katz, MD. “A lot of times, I”ll say, Oh, I see you have an extra nipple, and my patient will look at me like, What?” See a doctor, through, if you notice changes such as a rash, a new lump or dimple, or nipple discharge.