The purple blood vessels are dilated capillaries. One condition is a physiological change, such as the dilated purple capillaries in the face of people who often live in highland areas. In the other case, the purple blood vessels appear on the lower extremities, especially on the outer side of the calves, and on the outer lower side of the thighs, which is often the stage I of varicose veins, the dilated capillaries. In this case, early consultation in vascular surgery and ultrasound examination of the veins of the lower extremities should be performed to determine the presence of deep and superficial venous valve insufficiency or penetrating branch valve insufficiency, because valve insufficiency causes venous dilatation and dilatation of veins at the next level, including small veins and capillaries, triggering the purple vascular condition.