Cancer cells divide more quickly than healthy cells, and chemotherapy drugs effectively target those cells. Unfortunately, fast-growing cells that are healthy can be damaged too. There are many different chemotherapy drugs with the potential for many different side effects.
Symptoms & Signs. Dark circles under the eyes are a common complaint of both men and women, although they can occasionally be seen in children. As people age, the skin becomes thinner and collagen is lost, sometimes enhancing the appearance of blood vessels beneath the eyes and making the area appear darker.
Dark circles under the eyes are one of the most common cosmetic complaints that people have. They occur when dark blood pooling in veins under the skin shows through. The reason this occurs specifically in this area, under the eyes, is that the skin there tends to be thinner than on other parts of the body. This problem tends to worsen with age and sun and other damage to the skin, as the skin deteriorates over time. There is no simple treatment for this problem.