Chronic venous insufficiency (CVI) is a common vein condition in which damaged valves in your leg veins allow blood to flow backward and pool, causing swelling, pain, skin changes, and — if left untreated — venous ulcers. At Vein Health Clinics, board-certified vascular surgeon Dr. Obinna Nwobi, MD, MPH, diagnoses and treats CVI using advanced, minimally invasive techniques such as endovenous ablation, sclerotherapy, and VenaSeal closure at five Central Florida locations. Most treatments are performed in-office with little to no downtime.
What Is Chronic Venous Insufficiency?
Chronic venous insufficiency (CVI) — sometimes called chronic venous disease — develops when the one-way valves inside your leg veins weaken or stop working properly. Healthy leg veins rely on these valves to push blood upward against gravity and back toward your heart. When a valve fails, blood leaks backward (a process called venous reflux) and pools in the vein.
Over time, this pooling increases pressure inside the vein. The sustained high pressure damages more valves, stretches vein walls, and forces fluid into surrounding tissue. Without treatment, CVI is a progressive condition — meaning it does not resolve on its own and typically worsens.
CVI is remarkably common. According to the Society for Vascular Surgery, venous disease affects an estimated 40 percent of the U.S. adult population, with women diagnosed more frequently than men. Despite its prevalence, many people dismiss early symptoms as ordinary leg fatigue or aging.
Sources: Society for Vascular Surgery Clinical Practice Guidelines: Management of Venous Leg Ulcers (2014, updated 2023); Eberhardt & Raffetto, “Chronic Venous Insufficiency,” Circulation (2014).
Recognizing CVI Symptoms
CVI symptoms usually start mild and worsen gradually. Early warning signs are often most noticeable at the end of a long day on your feet. Common symptoms include:
- Aching, heaviness, or tiredness in your legs — especially after prolonged standing or sitting
- Swelling in your lower legs and ankles that worsens through the day and improves overnight
- Varicose veins — enlarged, twisted, rope-like veins visible beneath the skin
- Itching or burning around affected veins
- Restless legs — an uncomfortable urge to move your legs, particularly at night
- Skin discoloration — reddish-brown or darkened patches near the ankles (stasis dermatitis)
- Hardened or thickened skin — changes in texture around the lower legs (lipodermatosclerosis)
- Venous ulcers — open, slow-healing sores that typically develop near the inner ankle
Important: If you develop a sudden, painful, red, swollen leg, seek emergency medical care. These may be signs of deep vein thrombosis (DVT) — a blood clot that requires urgent treatment and can lead to a life-threatening pulmonary embolism.
For a deeper look at how to spot CVI early, read our guide: Spotting the Warning Signs of Chronic Venous Insufficiency.
CVI Stages: Understanding Disease Progression
Physicians classify CVI severity using the CEAP system (Clinical–Etiologic–Anatomic–Pathophysiologic), which ranges from C0 (no visible signs) to C6 (active ulceration):
| CEAP Class | What You See or Feel |
|---|---|
| C0 | No visible or palpable signs of venous disease |
| C1 | Spider veins (telangiectasias) or reticular veins |
| C2 | Varicose veins |
| C3 | Edema (swelling) without skin changes |
| C4a | Skin discoloration or eczema (stasis dermatitis) |
| C4b | Hardened, thickened skin (lipodermatosclerosis) |
| C5 | Healed venous ulcer |
| C6 | Active venous ulcer |
CVI is most treatable in its earlier stages. The longer the condition goes untreated, the greater the risk of complications including chronic skin breakdown and venous ulcers that are difficult to heal.
Sources: Lurie et al., “The 2020 update of the CEAP classification system and reporting standards,” Journal of Vascular Surgery: Venous and Lymphatic Disorders (2020).
Are You at Risk for CVI?
Several factors make CVI more likely:
- Age — CVI risk increases with age, especially after 50
- Sex — women are diagnosed two to three times more often than men, partly due to hormonal influences
- Family history — a genetic tendency toward valve weakness runs in families
- Pregnancy — increased blood volume and hormonal shifts place added stress on leg veins; risk rises with each pregnancy
- Prolonged standing or sitting — occupations requiring long periods on your feet or at a desk slow venous return
- Obesity — excess weight increases pressure on leg veins
- History of DVT — a prior deep vein blood clot can damage valves and trigger post-thrombotic CVI
- Sedentary lifestyle — lack of regular movement weakens the calf muscle pump that helps push blood upward
- Smoking — tobacco use impairs circulation and vein wall health
If one or more of these factors applies to you and you are experiencing leg symptoms, a vein evaluation can determine whether CVI is the cause.
How We Diagnose CVI
At Vein Health Clinics, Dr. Nwobi performs a thorough evaluation to confirm CVI and map out the exact location and extent of valve dysfunction:
Clinical Evaluation Dr. Nwobi reviews your symptoms, medical history, and risk factors, followed by a physical examination of your legs — checking for visible veins, swelling, skin changes, and pulses.
Duplex Ultrasound This noninvasive imaging test is the gold standard for diagnosing CVI. Using sound waves, it visualizes blood flow through your veins in real time and identifies exactly which valves are leaking. The exam is painless, requires no needles or dye, and is typically performed in our office during your visit.
Duplex ultrasound also helps Dr. Nwobi differentiate CVI from other conditions with similar symptoms — such as lymphedema, deep vein thrombosis, or arterial insufficiency — ensuring you receive the right diagnosis and treatment.
Sources: 2023 SVS/AVF/ACP/SIR/SVM Clinical Practice Guidelines for the Management of Varicose Veins; AIUM Practice Parameter for the Performance of Peripheral Venous Ultrasound (2022).
CVI Treatment at Vein Health Clinics
CVI treatment has advanced dramatically. Today, most patients can be treated with minimally invasive, in-office procedures that require little or no downtime — replacing the vein-stripping surgeries of the past.
Dr. Nwobi develops an individualized treatment plan based on your CEAP classification, symptom severity, ultrasound findings, and overall health.
Conservative Management
For patients with early-stage CVI or as a complement to procedural treatment:
- Medical-grade compression stockings — graduated compression helps push blood upward, reducing swelling and slowing disease progression. Compression therapy is the foundation of CVI management and is recommended at every stage.
- Leg elevation — elevating your legs above heart level for 15–30 minutes several times daily helps reduce venous pressure
- Exercise — regular walking and calf raises strengthen the muscle pump that aids venous return
- Weight management — reducing excess weight decreases pressure on leg veins
- Skin care — moisturizing and protecting the skin of your lower legs helps prevent breakdown in areas of stasis dermatitis
Endovenous Thermal Ablation
Endovenous ablation is a minimally invasive procedure used to close the malfunctioning vein that is the source of reflux. Under ultrasound guidance, a thin catheter is inserted into the affected vein through a tiny skin puncture. The catheter delivers controlled thermal energy (heat) to the vein wall, causing it to seal shut. Blood then naturally reroutes through nearby healthy veins.
- Performed in-office under local anesthesia
- Takes approximately 30–60 minutes
- Most patients walk out and return to normal activities the same day or the next day
- Clinical success rates exceed 95 percent at one year
Endovenous ablation is considered first-line treatment for CVI caused by great saphenous vein (GSV) or small saphenous vein (SSV) reflux, per current Society for Vascular Surgery guidelines.
Sources: 2023 SVS/AVF/ACP/SIR/SVM Clinical Practice Guidelines for the Management of Varicose Veins (strong recommendation for endovenous ablation over open surgery).
Sclerotherapy
Sclerotherapy involves injecting a solution directly into the affected vein, causing it to collapse and be reabsorbed by the body. This treatment is particularly effective for:
- Smaller varicose veins and reticular veins
- Spider veins associated with underlying CVI
- Residual veins remaining after ablation of the main trunk
Foam sclerotherapy, which uses a foam version of the sclerosing agent under ultrasound guidance, can treat larger varicose veins that are not suitable for thermal ablation.
Learn more: What Is Sclerotherapy?
Ambulatory Phlebectomy
Ambulatory phlebectomy is a minimally invasive procedure to remove surface varicose veins through tiny, 2–3 mm incisions. It is often performed alongside endovenous ablation to address visible bulging veins. The procedure is done under local anesthesia in the office, and the micro-incisions typically heal without sutures, leaving minimal scarring.
Wound Care for Venous Ulcers
For patients with active venous ulcers (CEAP C6), treatment combines addressing the underlying venous reflux through the procedures above with specialized wound care to promote healing. Correcting the root cause of CVI — the leaking veins — is essential for ulcer healing and for preventing recurrence.
What to Expect During Your Visit
- Consultation — Dr. Nwobi reviews your symptoms, medical history, and performs a leg examination
- Diagnostic ultrasound — a painless duplex scan maps your veins and identifies any reflux
- Personalized treatment plan — based on your findings, Dr. Nwobi recommends the best approach and answers your questions
- Treatment — most procedures are performed in-office during a follow-up visit and take 30–60 minutes
- Follow-up — a post-procedure ultrasound confirms successful closure, and Dr. Nwobi monitors your recovery
Most CVI treatments are covered by medical insurance when deemed medically necessary.
Why Choose Vein Health Clinics for CVI Treatment?
- Board-certified vascular surgeon — Dr. Obinna Nwobi, MD, MPH, is fellowship-trained in vascular and endovascular surgery, bringing specialized expertise in venous disease
- Comprehensive vein care — from initial evaluation through advanced minimally invasive treatment, all under one roof
- In-office convenience — most CVI procedures are performed in our comfortable office setting, not a hospital operating room
- Advanced techniques — Dr. Nwobi uses the latest evidence-based treatments including endovenous ablation, VenaSeal, and ultrasound-guided sclerotherapy
- Five Central Florida locations — making expert vein care accessible across the region
Our Locations
Oviedo 1000 Executive Dr, Suite 8, Oviedo, FL 32765 Phone: (877) 817-8346
Winter Haven 1121 1st St S, Winter Haven, FL 33880 Phone: (877) 817-8346
Winter Garden 301 SW Crown Point Rd, Suite 140, Winter Garden, FL 34787 Phone: (877) 817-8346
Port St. Lucie 1801 SE Hillmoor Dr, Suite C-208, Port St. Lucie, FL 34952 Phone: (877) 817-8346
Frequently Asked Questions
Can chronic venous insufficiency be reversed? CVI cannot be cured in the sense of restoring damaged valves to full function. However, effective treatments exist that close or remove the malfunctioning veins, relieve symptoms, and stop disease progression. With minimally invasive procedures such as endovenous ablation, most patients experience significant and lasting improvement. Ongoing compression therapy and lifestyle habits help maintain results.
Does chronic venous insufficiency go away on its own? No. CVI is a progressive condition — without treatment, symptoms typically worsen over time. High venous pressure damages additional valves, leading to increased swelling, skin changes, and eventually ulceration in advanced cases. Early treatment produces the best outcomes.
Is chronic venous insufficiency dangerous? CVI is not immediately life-threatening, but it is a serious medical condition that should not be ignored. Untreated CVI can lead to painful, hard-to-heal venous ulcers and significantly affect your quality of life. CVI is also associated with a higher risk of deep vein thrombosis (DVT). If you experience sudden severe leg swelling, redness, or warmth, seek emergency care.
What does venous insufficiency feel like? Most people describe CVI as a persistent heaviness, achiness, or tiredness in their legs that worsens after standing or sitting for long periods and improves when they elevate their legs or walk. You may also notice swelling around your ankles, itching, skin discoloration, or visible varicose veins.
How long does CVI treatment take? Most in-office procedures — including endovenous ablation, VenaSeal, and sclerotherapy — take 30 to 60 minutes. Recovery is rapid: many patients walk out of the office and resume normal activities the same day or the next day. Dr. Nwobi provides specific post-procedure instructions tailored to your treatment.
Will insurance cover CVI treatment? CVI treatments that are medically necessary — meaning you have documented symptoms and ultrasound-confirmed reflux — are typically covered by most major insurance plans, including Medicare. Cosmetic-only spider vein treatment may not be covered. Our team can help verify your benefits before scheduling.
Medical Citations
- Society for Vascular Surgery (SVS), American Venous Forum (AVF), American College of Phlebology (ACP), Society of Interventional Radiology (SIR), Society for Vascular Medicine (SVM). “Clinical Practice Guidelines for the Management of Varicose Veins of the Lower Extremities.” Journal of Vascular Surgery (2023). (Ablation as first-line; CEAP classification; diagnostic protocols)
- Lurie F, Passman M, Meisner M, et al. “The 2020 update of the CEAP classification system and reporting standards.” Journal of Vascular Surgery: Venous and Lymphatic Disorders. 2020;8(3):342-352. (CEAP staging system)
- Eberhardt RT, Raffetto JD. “Chronic venous insufficiency.” Circulation. 2014;130(4):333-346. (Epidemiology: ~40% of US adults; pathophysiology; risk factors)
- National Heart, Lung, and Blood Institute (NHLBI). “Venous Insufficiency.” nhlbi.nih.gov. (Patient-facing overview of CVI causes, symptoms, and treatment)
- Gloviczki P, Comerota AJ, Dalsing MC, et al. “The care of patients with varicose veins and associated chronic venous diseases: clinical practice guidelines of the SVS and AVF.” Journal of Vascular Surgery. 2011;53(5 Suppl):2S-48S. (Compression therapy protocols; wound management)
Online Marketing For Doctors