Spider veins usually do not pose a health threat. Although, they can cause aching and discomfort, spider veins are primarily a cosmetic problem.
Both spider veins and varicose veins are caused by a backup of blood related to venous insufficiency. Venous insufficiency occurs when valves in the veins become damaged or weak, causing blood to pool in leg veins instead of traveling back up to the heart.
Spider veins are also caused by issues unrelated to underlying venous insufficiency, including hormones, sun exposure, and even minor injuries. However, due to their connection with venous insufficiency that can cause bulging, painful varicose veins, it’s recommended that you see a vein specialist for a full evaluation to determine if your spider veins are related to hidden varicose veins in the legs; this will allow your doctors to help you treat venous insufficiency before it becomes a more aggressive problem.
Sclerotherapy is the treatment of choice for spider leg veins. The treatment is minimally invasive. The procedure also can improve related symptoms such as aching, swelling, burning and night cramps. Treated veins tend to fade within a few weeks. Occasionally it may take up to two months to see the full results. In most instances, patients require several sclerotherapy treatments.