Hi, I have gone through your medical history carefully and understood your concern. I think your situation has nothing serious to worry about. I would like to ask you for breast photos because I need to check it myself. There are many causes of areola discoloration. The main cause remains the hormone estrogen disbalance. You may have experienced an increase in estrogen levels which has caused the discoloration. Usually, it happens in early pregnancy but it can happen in non-pregnant women as well for the same reason. IT goes away by itself and no treatment is needed. As you don t notice any changes in breast texture and structure don t be afraid of any serious condition like breast cancer for example. Make sure to control your breasts in front of the mirror once a week to detect for changes. Also, try to remember if you have ever hurt your breast recently. A little trauma makes your nipples and areola bruise. If the discoloration persistent and other symptoms appear please see a doctor Hope this was helpful. Dr.Albana