Visible veins on the hands, arms, legs, or feet are often normal. Low body fat, aging skin, exercise, heat, and genetics can make them stand out without indicating impaired circulation. Varicose veins and chronic venous insufficiency are different: malfunctioning valves can allow blood to pool, causing swelling, aching, heaviness, itching, or skin changes. Appearance alone cannot tell you whether blood flow is healthy.
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