How to Heal a Venous Stasis Ulcer

What Is a Venous Leg Ulcer?

A venous leg ulcer is an open wound that typically develops on the inside of the leg near the ankle. These ulcers form when chronically high pressure in leg veins damages the skin’s ability to heal. Unlike ulcers caused by poor blood flow to the limb, venous ulcers usually appear as shallow, irregularly shaped sores with a red or yellowish base. The surrounding skin often becomes thick, discolored, or shiny, and the area may feel warm to the touch.

Venous leg ulcers account for about 80% of all lower leg ulcerations and affect approximately 1% of the U.S. population.¹ They are more common in people over 55 and in women, and they tend to be painful and slow to heal without treatment. These ulcers rarely heal on their own, and the longer they persist, the greater the risk of infection and lasting tissue damage.

Timeline for Healing a Venous Ulcer

Venous ulcer healing happens in stages, and understanding what to expect can help you recognize when treatment is working.

First month: wound care and compression. The initial phase focuses on removing dead tissue, controlling drainage, and preventing infection. Your provider will teach you how to clean the wound and apply dressings that create an optimal healing environment. Compression begins right away, and you may not see dramatic visible change yet, though new tissue is forming underneath.

Months 2 to 3: monitoring progress. You should notice the wound getting smaller with less drainage and healthier-looking tissue at the base. If the wound is not improving after 4 to 6 weeks of consistent compression and wound care, this is often when a vein specialist evaluation becomes important.

Months 4 to 6: accelerating healing. Many ulcers show significant improvement by this stage with ongoing compression and proper care. Research shows that patients who add minimally invasive vein treatment to compression therapy experience meaningfully faster healing than those relying on compression alone.²

Conservative Treatment: Foundation of Healing

Compression therapy remains the cornerstone of venous ulcer treatment and is essential regardless of what other treatments you receive.

• Compression therapy: Applying consistent pressure to the leg reduces swelling, improves blood flow, and helps prevent blood from pooling in the veins. Multi-layer compression bandaging, changed weekly by your care team, is standard during active healing. After the ulcer closes, most patients continue wearing compression stockings long-term.
• Wound care and dressing: Specialized hydrocolloid, alginate, or foam dressings manage drainage while keeping the wound in a moist healing environment. Dressing changes are typically weekly or as needed. If your ulcer becomes infected, your provider may prescribe topical or oral antibiotics to control the infection and prevent complications.
• Leg elevation and activity: Elevating the affected leg above heart level when resting reduces swelling. Gentle walking keeps the calf muscle pump working, which helps move blood back toward the heart.
• Nutrition and lifestyle: A diet with adequate protein, vitamin C, and zinc supports healing, along with good sleep, weight management, and avoiding smoking. Keeping the skin around the ulcer moisturized with a fragrance-free cream or lotion also helps prevent it from becoming dry and cracked, which can enlarge the wound.

What Causes Venous Ulcers? Chronic Venous Insufficiency Explained

Venous leg ulcers develop because of chronic venous insufficiency (CVI), a condition in which the one-way valves inside leg veins stop working properly. These damaged valves allow blood to flow backward and pool in the legs instead of returning to the heart, creating venous hypertension, or abnormally high pressure in the veins.

Over time, this pressure is associated with damage to small blood vessels in the skin and inflammation that can break down skin tissue into an open ulcer.³ Common risk factors include a history of blood clots, previous leg injuries, obesity, a sedentary lifestyle, and a family history of varicose veins.

Note: Wound care and compression alone treat the ulcer itself, but they do not correct the vein reflux that led to it, which is why ulcers can be slow to fully resolve or may return without further evaluation.

Minimally Invasive Vein Treatments for Faster Healing Venous Stasis Ulcers

Addressing the vein disease behind the ulcer, alongside compression and wound care, may help healing progress faster and lower the chance the ulcer returns.

• Radiofrequency ablation (RFA): A thin catheter is guided into the affected vein using ultrasound. As it is slowly withdrawn, radiofrequency energy heats the vein wall, causing it to close. The procedure takes about 30 to 45 minutes per leg, is performed in an outpatient setting under local anesthesia, and most patients resume light activity the same day.
• Endovenous laser treatment (EVLT): This procedure uses laser energy instead of radiofrequency to close a damaged vein. A thin laser fiber is guided into the vein, and as it is withdrawn, heat seals the vein wall shut. Technique and recovery are similar to RFA.
• Ultrasound-guided sclerotherapy: A liquid or foam solution is injected directly into smaller branch or perforating veins under ultrasound guidance. This approach is often used alongside ablation to close the smaller veins feeding blood into the area around the ulcer.

All three procedures work by closing or sealing off the damaged vein, redirecting blood flow to healthy veins nearby. This reduces the abnormal pressure in the leg and supports the skin’s ability to heal. Clinical data show that ulcers treated with EVLT plus compression healed at higher rates than compression alone: 57% at 3 months, 74% at 6 months, and 78% at 12 months, compared to slower progress with compression alone.⁴ This means some patients may see their ulcer close 2 to 3 months sooner with vein treatment added to their care plan.

How to Prevent Venous Ulcers

Once an ulcer heals, long-term management matters, since recurrence is common without ongoing care.

• Long-term compression: Most patients are advised to continue wearing compression stockings, at least during active hours, after healing. Consistent use is one of the most important factors in preventing a new ulcer from forming.
• Exercise and circulation: Regular low-impact activity, such as walking or swimming, keeps the calf muscle pump working and supports long-term vein health.
• Ongoing specialist follow-up: If you have had a venous ulcer before, or your venous symptoms have not improved after 4 to 6 weeks of proper care, a vein specialist can perform an ultrasound to evaluate whether additional vein treatment may help. You can also take our vein symptom quiz to see if you should schedule an evaluation.