Left nipple darker than right after breast reduction. Is this normal? (Photo)

Congratulations on having undergone the breast reduction procedure. The darker nipple/areola complex may be a sign of venous insufficiency. In other words, the darker side may not be draining  the venous  outflow as well as the lighter side. Best to make sure that your plastic surgeon is aware of the situation; he/she will always be your best resource when it comes to accurate assessment, advice, and/or meaningful reassurance. Best wishes for an outcome that you will be very pleased with

There are several possibilities as to why one nipple is darker than the other. It may simply be bruising. What is more likely however is venous congestion of the nipple and underlying tissue, which can happen during a reduction when blood flow to the piece of tissue which the nipple is connected to is not adequate to quickly drain the blood away. Often this will go away as the tissues heal and the breast re-establishes blood flow. Sometimes this can be permanent. It does not appear that you have necrosis, as this is apparent pretty immediately after surgery, and the nipple in this case would look a lot darker, almost black.