These are somewhat smaller than varicose veins and their function is to carry blood to the capillaries in your skin, rather than back to the heart and lungs for oxygen. They have thin walls that expand under excessive pressure. Though they are large enough to be unsightly, they are not technically classified as varicose veins. These veins are enlarged due to an increase in pressure. They are generally hereditary. Reticular veins can exist independently but can also be the underlying problem that gives rise to surface spider veins. They are usually considered a cosmetic problem since these medium size veins do not lead to substantial medical symptoms or complications. Below is a before and after Photo Gallery of some of our patients who have undergone treatment for their reticular veins.