Varicose veins are common, often appearing as enlarged, twisted, blue or purple veins just below the skin. The veins mostly form in the legs, where veins work against gravity to move blood back to the heart. For many people, varicose veins are mainly a cosmetic concern. For others, they may cause discomfort, swelling, skin changes, or more serious circulation-related complications.
While varicose veins are not always dangerous, they should not be ignored when symptoms worsen, skin changes appear, or signs of a blood clot develop.
What Are Varicose Veins?
Varicose veins occur when vein valves become weak or damaged. Healthy veins contain one-way valves that help blood flow upward toward the heart. When these valves do not close properly, blood can flow backward and pool inside the vein. This increased pressure causes the vein to stretch, enlarge, and become visible under the skin.
Varicose veins most commonly affect the legs because walking and standing increase pressure in the lower-body veins.
Common signs of varicose veins include:
- Bulging, twisted veins visible under the skin
- Aching, heaviness, or throbbing in the legs
- Swelling around the ankles or calves
- Itching or burning near affected veins
- Leg cramps, especially at night
- Symptoms that worsen after long periods of standing or sitting
Should I Be Concerned About My Varicose Veins?
In many cases, varicose veins are not instantly a cause for concern. Mild varicose veins may cause little more than visible vein enlargement or occasional discomfort. However, varicose veins can sometimes signal underlying venous insufficiency, meaning the leg veins are not moving blood efficiently.
When blood pools in the legs over time, pressure builds inside the veins. This can lead to inflammation, skin damage, clotting problems, and open sores. The risk of complications is higher when varicose veins are painful, worsening, associated with swelling, or accompanied by skin discoloration.
Potential Risks and Complications
Chronic Venous Insufficiency
Chronic venous insufficiency occurs when leg veins have long-term difficulty returning blood to the heart. This condition can cause persistent swelling, aching, heaviness, and skin changes. Over time, the skin may become dry, thickened, irritated, or discolored.
Leg Swelling
Varicose veins can contribute to fluid buildup in the legs, especially around the ankles. Swelling may become more noticeable at the end of the day or after prolonged standing. Persistent swelling can increase discomfort and place stress on the skin.
Skin Changes
Long-term vein pressure can damage the skin and surrounding tissue. Skin near varicose veins may become:
- Brown or reddish-brown
- Itchy or inflamed
- Dry or scaly
- Thickened or hardened
- Sensitive or painful
These changes may indicate advanced venous disease.
Venous Ulcers
Venous ulcers are open sores that usually develop near the ankle. They occur when prolonged pressure and poor circulation damage the skin. Venous ulcers can be slow to heal and may become infected if not properly treated.
Superficial Thrombophlebitis
Superficial thrombophlebitis is inflammation and clotting in a vein close to the skin’s surface. It can cause redness, warmth, tenderness, and a firm cord-like area along the vein. Although superficial clots are usually less dangerous than deep vein clots, medical evaluation is important.
Deep Vein Thrombosis
Deep vein thrombosis, or DVT, is a blood clot in a deeper vein, usually in the leg. Varicose veins do not always cause DVT, but vein disease and poor circulation may increase clot-related concerns in some individuals.
A DVT can become serious if part of the clot travels to the lungs, causing a pulmonary embolism. Warning signs include sudden leg swelling, pain, warmth, redness, chest pain, shortness of breath, or coughing blood.
Bleeding
Varicose veins near the surface of the skin may bleed if injured. Because these veins are under increased pressure, bleeding can sometimes be significant. Immediate pressure and medical attention may be needed.
When to Seek Medical Attention
Medical evaluation is recommended when varicose veins cause symptoms, progress over time, or affect daily comfort and mobility.
A healthcare professional should assess varicose veins when any of the following occur:
- Persistent leg pain, aching, or heaviness
- Swelling in the legs or ankles
- Skin discoloration around the ankle or lower leg
- Itching, rash, or skin irritation near varicose veins
- Open sores or wounds near the ankle
- Veins that become red, warm, hard, or tender
- Sudden increase in swelling or pain
- Bleeding from a varicose vein
- Symptoms that interfere with standing, walking, or sleep
Urgent medical care is important for symptoms that may suggest a blood clot or pulmonary embolism, including:
- Sudden swelling in one leg
- Severe calf or thigh pain
- Redness and warmth in one leg
- Sudden chest pain
- Shortness of breath
- Rapid heartbeat
- Coughing blood
- Fainting or severe dizziness
How Varicose Veins Are Diagnosed
Diagnosis often begins with a physical examination of the legs while standing and sitting. A clinician may ask about symptoms, medical history, family history, occupation, pregnancies, prior blood clots, and lifestyle factors.
A venous ultrasound may be used to evaluate blood flow and valve function. This test can help identify venous reflux, vein blockage, or blood clots.
Treatment Options for Varicose Veins
Treatment depends on the severity of symptoms, vein size, underlying circulation problems, and the presence of complications.
Lifestyle Measures
Lifestyle changes may help reduce symptoms and slow progression. These may include:
- Regular walking or low-impact exercise
- Leg elevation
- Avoiding long periods of standing or sitting
- Weight management when appropriate
- Avoiding tight clothing around the waist or legs
- Calf-strengthening movement throughout the day
These measures may improve circulation but often do not eliminate existing varicose veins.
Compression Stockings
Compression stockings apply gentle pressure to the legs, helping veins move blood more efficiently. They may reduce swelling, aching, and heaviness. Proper fit is important, especially for people with circulation problems or other medical conditions.
Sclerotherapy
Sclerotherapy involves injecting a special solution or foam into the affected vein. The solution irritates the vein lining, causing the vein to close. Over time, the treated vein fades as blood reroutes through healthier veins. This is often used for smaller varicose veins and spider veins.
Endovenous Laser Treatment
Endovenous laser treatment uses laser energy to close a diseased vein from inside. A thin fiber is inserted into the vein, and heat seals the vein shut. Blood then redirects through nearby healthy veins.
Radiofrequency Ablation
Radiofrequency ablation uses heat generated by radiofrequency energy to close the affected vein. It is commonly used for larger varicose veins caused by venous reflux.
Ambulatory Phlebectomy
Ambulatory phlebectomy removes surface varicose veins through tiny skin punctures. This option is often used for bulging veins close to the skin.
Vein Stripping and Ligation
Vein stripping and ligation are older surgical procedures used less often today but may still be appropriate in select cases. The affected vein is tied off and removed through small incisions.
Treatment for Ulcers or Advanced Venous Disease
When varicose veins are associated with ulcers or significant skin changes, treatment may include wound care, compression therapy, infection control, and procedures to correct venous reflux.
Can Varicose Veins Be Prevented?
Not all varicose veins can be prevented, especially when genetics, age, pregnancy, or hormonal changes play a role. However, certain habits may support better vein health:
- Staying physically active
- Moving the legs during long periods of sitting
- Taking breaks from prolonged standing
- Elevating the legs when resting
- Maintaining a healthy weight
- Wearing compression stockings when recommended
The Bottom Line
Varicose veins are often not dangerous, but they can become more than a cosmetic issue. Persistent pain, swelling, skin discoloration, inflammation, bleeding, or open sores may indicate more advanced vein disease. In some cases, varicose veins are associated with complications such as venous ulcers, superficial clots, or deeper circulation problems.
Early evaluation can help identify the cause of symptoms, reduce discomfort, and prevent complications. Modern treatment options are often minimally invasive and can improve both appearance and quality of life.