The dark area around the breast is called the areola. It surrounds the nipple and contains glands called Montgomery's glands that secrete a lubricating oil. This oil protects the nipple and skin from chafing during breastfeeding.
The areola can darken in color during pregnancy and breastfeeding. This is a normal change and is caused by hormonal changes.
In some cases, changes in the areola may be a sign of a medical condition, such as Paget's disease of the breast. Paget's disease of the breast is a rare form of breast cancer that starts on the nipple and extends to the areola.
If you notice any changes in the skin of your nipple or areola, such as redness, scaling, or itching, it is important to see your doctor.
