Causes of Spider Veins

Spider leg veins, also known as varicose veins, are enlarged veins, which are often painful. These veins have expanded because the valves inside the veins that regulate the direction of blood flow do not close correctly, allowing the blood to flow backwards within the veins and weakening the walls of the veins. This, in turn, causes swelling and pain in the veins, leading to difficulties in standing for long periods of time and muscle pain. Also, the enlarged veins appear like a dark blue or pur

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