Breast buds are tender, raised bumps that appear directly under a girl’s nipples. It’s not unusual for breast buds to appear on just one side first. As a result, there have been many frantic but unnecessary trips to the doctor when a lump has suddenly appeared under a single nipple of a young girl.
Similarly, a mother can understandably become concerned when one side of her daughter’s chest is noticeably larger than the other. (For reasons that are not entirely understood, this usually occurs on a girl’s left side.) This is not uncommon. Approximately 25% of adolescent girls experience breast asymmetry that persists into adulthood. Later in life, corrective measures can be taken to “even out” this difference in the size of a woman’s breasts. (However, the difference between each breast is typically not that noticeable.)
