Large and dark areolas are affected by genetic factors. Generally, after puberty, the nipples, areolas and mammary glands start to increase in size due to genetic influences, which is a normal physiological phenomenon. Especially after a woman is pregnant, the areola will again increase in size and color until the end of the breastfeeding period, when the color gradually returns to normal, which is also a normal physiological phenomenon. In addition, the color of the areola is lighter in fair-skinned women and darker in darker-skinned women, the color of the nipple and areola will also become darker, and with age, as hormone levels increase, the areola will also deepen in color, a condition that is not affected externally. When the skin is damaged by violent friction damage or rougher underwear damage, it may also lead to increased pigmentation of the skin and a larger areola. If there are no uncomfortable symptoms, the problem is considered minor.