Possible causes of dark circles under the eyes Genetic causes. If you have naturally very thin and pale skin, then it allows you to see the blood vessels under its surface. Secondly, there is periorbital hyperpigmentation — excessive pigmentation of the skin surface around the eyes.
Lifestyle factors. Alcohol abuse, smoking, too salty food, as well as cortisol, cause blood vessels to dilate.
Age. As the skin ages, it loses fat, becoming even thinner and more transparent.
Fatigue. During fatigue, lack of sleep or stress, the adrenal glands produce a lot of the steroid hormone cortisol. This hormone not only helps to cope with nervous stress, but also increases the volume of blood pumped through the blood vessels.
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