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Vein Condition

Leg Swelling: When Vein Disease Is the Cause

Persistent leg swelling is often a sign of venous insufficiency — a treatable medical condition. Our board-certified vein specialists diagnose the root cause and offer minimally invasive treatments covered by most insurance.

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Leg Swelling & Vein Disease

Leg swelling — medically called edema — occurs when excess fluid accumulates in the tissues of the lower leg. While it can have many causes, venous insufficiency is one of the most common and most overlooked.

When vein valves fail, blood pools in the lower legs under increased pressure. This elevated venous pressure forces fluid out of the blood vessels and into surrounding tissues, causing the characteristic puffiness and tightness of venous edema.

Unlike swelling from injury or infection, venous edema tends to worsen throughout the day (as you stand and walk) and improve overnight when your legs are elevated. It is often accompanied by other signs of vein disease such as varicose veins, skin discoloration, and leg heaviness.

Signs of Venous Edema

  • Puffiness or tightness in the lower leg or ankle
  • Skin that leaves an indentation when pressed (pitting edema)
  • Legs that feel heavier as the day progresses
  • Reduced ankle flexibility or range of motion
  • Skin discoloration or a brownish tint near the ankle
  • Aching, heaviness, or fatigue in the legs
  • Varicose veins or visible surface veins

Don't Ignore Persistent Leg Swelling

A free vein screening with duplex ultrasound can identify whether vein disease is the cause — and what to do about it.

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Frequently Asked Questions

What causes leg swelling?
Leg swelling (edema) has many causes, but venous insufficiency is one of the most common. When vein valves fail, blood pools in the lower legs, increasing pressure and causing fluid to leak into surrounding tissues. Other causes include heart failure, kidney disease, lymphedema, and medications.
How do I know if my leg swelling is from vein disease?
Venous edema typically worsens throughout the day, improves with leg elevation, and is often accompanied by varicose veins, skin discoloration, or leg heaviness. A duplex ultrasound can confirm whether venous insufficiency is the cause.
Can treating varicose veins reduce leg swelling?
Yes. Treating the underlying venous reflux with radiofrequency ablation or laser therapy significantly reduces venous edema in most patients. Many report noticeable improvement in swelling within weeks of treatment.
Is leg swelling from vein disease covered by insurance?
When leg swelling is caused by documented venous insufficiency, treatment is typically covered by major insurance plans including Medicare. Our team will verify your benefits before your appointment.
What can I do at home to reduce leg swelling?
Elevating your legs above heart level, wearing compression stockings, staying active, and reducing sodium intake can help manage venous edema. However, these measures do not treat the underlying vein disease — only medical treatment can do that.
When should I see a doctor for leg swelling?
See a vein specialist if your leg swelling is persistent, worsening, accompanied by pain or skin changes, or if it occurs in only one leg. Sudden severe swelling with pain could indicate a blood clot and requires immediate evaluation.

Find Relief from Leg Swelling

Serving Michigan and South Carolina with 7 convenient clinic locations. Free screenings available.

Book Free ScreeningCall 866-692-4907