Puffiness around the eyes can be caused by lack of sleep, overwork, skin disorders and hypothyroidism. Pregnancy can cause fluid retention and puffiness around the eyes. A high-salt diet also causes fluid retention. Other causes come from toxins through alcohol and tobacco use. Hormonal changes, skin disorders and allergies affect the delicate skin around the eyes.
Despite popular belief, lack of sleep, fatigue and staying out late are not the main causes of dark circles under the eyes. Some of the more common causes are allergies, eczema, heredity, smoking, drinking, nasal congestion that dilates and darkens under-eye veins, sun exposure and thinning skin.
