|MadSci Network: Medicine|
Thomas, A person does not necessarily need to be tired for dark circles to be present. A genetic component can predispose someone to have these circles present. Actually what you are seeing is an accumulation of fluid around the eyes which gives a dark appearance. The skin is very thin in this area. You might be seeing just some stasis of blood.in the tissues. Certain diseases also can cause this phenomenon. I would check with your family doctor regarding those diseases. More information can be found although mostly from a cosmetic level, if you search "dark circles around eyes" I did not cite them, since they appear more in the advertising arena. I trust this will support additional research on your part to learn more about this interesting topic. Thank you for your question. Linda
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