If you often find yourself standing or sitting for extended periods, you may have noticed unsightly blue veins on your legs. These veins, which can be both cosmetically concerning and indicative of underlying venous problems, are a common issue many individuals face. The appearance of blue veins on legs can indicate many things — blue veins can be spider veins, reticular veins, or varicose veins. They can be purely cosmetic or caused by underlying chronic venous insufficiency. In order to fix blue veins on legs, vein doctors must first investigate the root cause of the problem through duplex ultrasound scans, which allows them to visualize the direction of blood flow in leg veins and curate a personalized treatment plan.

Long Island Vein Treatment is led by a team of board-certified vein doctors who offer comprehensive vein treatments after diagnosing the root cause. When you visit our medical centers for vein treatment in Long Island, you can rest assured that our vein doctors will carefully examine your leg veins, discuss your symptoms, administer vascular imaging tests, and only then curate a personalized treatment plan. You can find our medical centers for vein treatment throughout Long Island, including West Islip, Jericho, Port Jefferson, and Hampton Bays. If you’re on the North Shore of Long Island, you can find our center for vein treatment on the border of Suffolk County and Nassau County.

Now that you know where to access effective treatments for your blue veins, it’s time to understand your options. Below, we provide the information you need about blue veins on legs.

Understanding Blue Veins on Legs

Blue veins on the legs are a visible manifestation of a complex physiological process. Depending on the size and symptoms of the blue veins, you may have spider veins, reticular veins, or varicose veins. Spider veins are dense clusters of damaged blood vessels that look like spider webs on the skin’s surface — they’re less than 1mm in diameter and don’t bulge out of the skin’s surface. Reticular veins are slightly larger blue veins, usually between 1mm and 3mm in diameter. And varicose veins are large, twisted, knotted blood vessels (more than 3mm) that bulge out of the skin’s surface. The following are possible reasons that you may suffer from blue veins on legs.

Prolonged Sitting or Standing

Prolonged periods of sitting or standing are among the primary factors contributing to the development of blue veins on the legs. This phenomenon is a result of gravitational forces that make it challenging for blood to return from the legs to the heart efficiently. When you sit or stand for extended periods, the blood in your lower extremities has to work against gravity to reach your heart. And if your vein valves weaken, blood can flow backward and accumulate in the leg veins, leading to prominent blue veins on the legs.

Weakening of Blood Vessels and Vein Valves

Another common cause of blue veins on the legs is the weakening of blood vessel walls. Healthy veins contain valves that ensure one-way blood circulation to the heart against the force of gravity. However, the valves and the walls of our veins can deteriorate over time due to various factors, allowing gravity to force blood to flow backward and accumulate in the leg veins. Your vein valves can weaken because of various reasons, including:

  • Genetics: Your genetic makeup can influence the strength and integrity of your valves. If you have a family history of venous issues, you may be predisposed to developing blue veins.
  • Aging: As we age, the elasticity of our veins and vein valves diminishes, making them more prone to dilation and the development of visible veins.
  • Hormonal Changes: Hormonal fluctuations, such as those during pregnancy and menopause, can contribute to vein wall weakening, increasing the likelihood of visible veins.

Chronic Venous Insufficiency

In some cases, blue veins on the legs can be an early sign of chronic venous insufficiency. CVI is a medical condition wherein the collapse of vein valves causes blood to flow backward and accumulate in the leg veins. This can lead to dilated vein walls, eventually causing spider veins, varicose veins, and other vein problems. Venous insufficiency is a chronic condition, which means it gradually worsens with time, so you must seek treatment at the earliest stage possible. Some of the earliest signs and symptoms of vein disease are leg pain, leg heaviness, leg cramps, restless leg syndrome, and spider veins and varicose veins.

Effective Treatments for Blue Veins on Legs


Sclerotherapy stands out as one of the most popular and effective minimally invasive procedures for treating spider veins and small varicose veins. Sclerotherapy is a simple, in-office procedure during which the vein doctor injects a special sclerosant solution into the spider veins and small varicose veins. The magic happens as the solution irritates the vein walls, causing them to seal shut. The spider veins eventually turn into hardened scar tissues metabolized by the body, making them fade away from the skin.

Endovenous Laser Ablation (EVLA)

Endovenous laser ablation is one of the most effective treatments for the root cause of spider veins and varicose veins — chronic venous insufficiency. During an EVLA procedure, a specialized laser fiber is inserted into the problematic vein. It’s guided into the diseased saphenous vein via ultrasound imaging. Once in place, it’s activated, thus delivering laser energy to close and collapse the problematic vein. This closure process gradually leads to the disappearance of the treated vein. Patients often appreciate the quick recovery time and minimal discomfort associated with EVLA.

Radiofrequency Ablation (RFA)

Radiofrequency Ablation (RFA) is another minimally invasive procedure used to treat varicose veins. RFA employs radiofrequency energy to heat and seal off the affected vein. The RFA procedure begins with the insertion of a catheter into the targeted vein. Radiofrequency energy is then delivered via the catheter, causing the vein to contract and eventually close. Like EVLA, RFA offers a shorter recovery period and less post-procedure pain compared to traditional surgery. It’s an effective treatment for vein disease and varicose veins.


VenaSeal is a specialized medical-grade adhesive used to seal the walls of the diseased vein, turning it into a hardened scar tissue eventually absorbed by the body. The VenaSeal adhesive is delivered through a small catheter directly into the problematic vein. VenaSeal is virtually painless, requires no downtime, and allows patients to return to their daily activities immediately. You don’t even have to wear compression stockings, and there’s no significant risk of nerve injury because there’s no thermal energy used.

Ambulatory Phlebectomy

For the removal of larger varicose veins, ambulatory phlebectomy is a highly effective minor surgical procedure. During the procedure, your physician will create tiny incisions along the path of the varicose vein. A special tool is then used to extract the vein in segments. Ambulatory phlebectomy is a cosmetic procedure, which means it can remove superficial varicose veins but can’t treat underlying chronic venous insufficiency.

Why Minimally Invasive Treatments Are Ideal

Long Island Vein Treatment specializes in minimally invasive treatments for blue veins on the legs and other venous conditions. Here’s why these procedures are the preferred choice:

  • Shorter recovery periods compared to traditional surgical methods.
  • Minimal pain and discomfort during or after the treatment.
  • Result in minimal scarring, ensuring a more aesthetically pleasing outcome.
  • Minimal side effects and no downtime — resume daily activities immediately.
  • Address the root cause of spider veins and varicose veins.
  • High success rate exceeding 97%.
  • Minimal risk of infections and complications.

Preventing the Recurrence of Blue Veins on Legs:

  • Engage in regular physical activity to improve circulation in your legs
  • Whenever possible, elevate your legs to reduce the pressure on your veins.
  • Wear compression stockings to prevent the accumulation of blood in leg veins.
  • Eat a fiber-rich and low-salt diet to support your veins.
  • Stay hydrated to improve blood circulation and strengthen vein valves.
  • Avoid prolonged periods of sitting or standing to prevent blood accumulation in leg veins.
  • Take regular breaks to move around and stretch your legs.

Contact Long Island Vein Treatment for Healthier, More Beautiful Legs

At Long Island Vein Treatment, our board-certified vein doctors are committed to diagnosing the root cause of your blue veins and providing personalized, minimally invasive treatments tailored to your unique needs. Remember that the first step toward addressing blue veins on your legs is seeking a professional diagnosis. Please schedule an appointment at your nearest medical center for vein treatment in Long Island. Don’t let blue veins hold you back—take the first step toward regaining your confidence and comfort today.