Skip to content
How It Works
Explore
Ask a Question Resources Pricing
Who It's For
Patients
Decode results, prep for appointments, weigh options.
Caregivers & advocates
Carry the research load for someone you love.
Providers & clinicians
Resources for patients in your practice.
Log In Sign Up
PubMed This is a summary of 104 peer-reviewed journal articles Updated
Chronic Venous Insufficiency

Chronic Venous Insufficiency (CVI): A Patient Guide

At a Glance

Chronic venous insufficiency occurs when leg veins cannot move blood back to the heart efficiently, causing pressure, swelling, heaviness, and skin changes. Duplex ultrasound and an ankle-brachial index help guide care, while compression, movement, elevation, and selected procedures can manage symptoms.

Chronic Venous Insufficiency (CVI) is a long-term condition that occurs when the veins in your legs have difficulty sending blood back up to your heart. CVI is one possible cause of leg swelling and heaviness, and it can involve backward blood flow (reflux) in superficial or deep veins, venous outflow obstruction, calf-muscle pump dysfunction, or combinations of these [1]. In a healthy circulatory system, one-way valves inside your veins act like tiny gates that prevent blood from flowing backward. When these valves become weak or damaged—a state known as valvular incompetence—blood begins to pool in the lower legs due to gravity [1]. This creates a buildup of pressure called venous hypertension, which is the underlying cause of the “heavy,” aching, or swollen feeling many patients experience [2].

While the initial symptoms of CVI may seem like a minor inconvenience, the condition is often progressive. If left unmanaged, the persistent high pressure can trigger a cycle of inflammation that affects the surrounding skin and tissue [3]. Over time, this may lead to visible changes such as varicose veins, brownish skin discoloration, or even the development of slow-healing sores known as venous ulcers [4]. It is important to know that while CVI is a chronic condition, its progression is not inevitable, and many people successfully manage their symptoms for decades [5].

Understanding your specific “vein map” is the first step toward effective management. A definitive diagnosis typically involves a venous duplex ultrasound, which should ideally be performed while your legs are dependent (such as standing) to accurately measure any backward blood flow [6][7]. Additionally, your care team will check your Ankle-Brachial Index (ABI)—a test that compares the blood pressure in your ankle to the pressure in your arm. This step is essential because it ensures your leg arteries are healthy enough to safely tolerate compression therapy, which is the cornerstone of CVI care [8][9].

Managing CVI focuses on lowering the pressure in your legs through a combination of daily habits and medical interventions. Conservative care often includes wearing medical-grade compression stockings, which help your “second heart”—the calf-muscle pump—push blood upward more efficiently [10][11]. For appropriate patients with suitable superficial reflux, minimally invasive procedures such as thermal ablation (using heat to seal a leaking vein) can provide significant relief and, alongside compression and wound care, help speed up the healing of ulcers [12][13]. By combining these tools with regular movement, skin protection, and leg elevation, you can help manage your circulation and protect the health of your legs for the long term.

In this guide

6 chapters

01

Understanding Chronic Venous Insufficiency

Learn how chronic venous insufficiency causes heavy, swollen legs, how doctors diagnose CVI, and how compression or procedures can help manage symptoms.

02

Recognizing CVI Symptoms and Emergency Warning Signs

Learn which chronic venous insufficiency symptoms are typical and which warning signs may mean a blood clot, infection, pulmonary embolism, or limb emergency.

03

Getting an Accurate Diagnosis and Classification

Learn how chronic venous insufficiency is diagnosed with duplex ultrasound, ABI testing, and CEAP grading, including reflux, blockages, and compression safety.

04

Managing Your CVI Through Daily Habits and Care

Learn how to manage chronic venous insufficiency with compression, walking, leg elevation, and skin care, plus safety warnings and when to contact your doctor.

05

Medical Procedures and Interventions for CVI

Learn about chronic venous insufficiency procedures, including ablation, sclerotherapy, phlebectomy, and iliac stents, with key risks and recovery details.

06

Managing and Healing Venous Leg Ulcers

Learn how venous leg ulcers heal with compression, wound care, and early vein ablation, plus when to seek specialist care and prevent ulcers from returning.

Common questions in this guide

Why does chronic venous insufficiency make my legs feel heavy or swollen?
When leg veins or their one-way valves do not move blood upward efficiently, blood can pool in the lower legs. This raises pressure in the veins and may cause heaviness, aching, and swelling, especially after standing or sitting for a long time.
How do doctors diagnose chronic venous insufficiency?
A venous duplex ultrasound shows how blood moves through the leg veins and can identify backward flow or blockage. An ankle-brachial index, or ABI, compares ankle and arm blood pressure to check whether compression is likely to be safe for the leg arteries.
Can I wear high-pressure compression stockings if I have CVI?
Compression can help the calf-muscle pump move blood upward, but the right pressure is not the same for everyone. Your clinician should review your ABI and other circulation findings before recommending high-pressure compression.
What treatments can help control chronic venous insufficiency?
Treatment may include medical-grade compression, regular movement, leg elevation, skin protection, and wound care when sores are present. Thermal ablation may be considered for some people with suitable leaking superficial veins.
What skin changes should I watch for with chronic venous insufficiency?
Watch for increasing swelling, brownish skin discoloration, varicose veins, or areas where the skin breaks down. A slow-healing sore or new skin breakdown should be reported to a healthcare professional because it may indicate a venous ulcer.

Questions For You

Answer a question to get research tailored to you. Your answers are private.

Get notified when new evidence is published on venous insufficiency.

We monitor PubMed for new peer-reviewed studies on this topic and email a short summary when something meaningful changes.

Questions to Ask Your Doctor

Curated prompts to bring to your next appointment.

  1. 1.What did my duplex ultrasound show about the specific location and severity of my venous reflux?
  2. 2.Based on my Ankle-Brachial Index (ABI), is it safe for me to wear high-pressure compression stockings?
  3. 3.Given the current stage of my CVI, are we focusing on conservative management or should we consider a procedure?
  4. 4.How much does my calf-muscle pump function contribute to my symptoms, and are there exercises that could help?
  5. 5.What signs of skin change or breakdown should I be looking for at home?

References

References (13)
  1. 1

    Biaxial mechanical behavior of bovine saphenous venous valve leaflets.

    Lu J, Huang HS

    Journal of the mechanical behavior of biomedical materials 2018; (77()):594-599 doi:10.1016/j.jmbbm.2017.10.028.

    PMID: 29096125
  2. 2

    Contribution of the Elastic Component and Venous Wall Arterialization in Patients with Venous Reflux.

    Ortega MA, Fraile-Martínez O, García-Montero C, et al.

    Journal of personalized medicine 2022; (12(2)) doi:10.3390/jpm12020260.

    PMID: 35207748
  3. 3

    Glycocalyx disruption, endothelial dysfunction and vascular remodeling as underlying mechanisms and treatment targets of chronic venous disease.

    Diaz JA, Gianesini S, Khalil RA

    International angiology : a journal of the International Union of Angiology 2024; (43(6)):563-590 doi:10.23736/S0392-9590.24.05339-2.

    PMID: 39873224
  4. 4

    Chronic venous disease. Part 1: pathophysiology and clinical features.

    Kumar P, Khan IA, Das A, Shah H

    Clinical and experimental dermatology 2022; (47(7)):1228-1239 doi:10.1111/ced.15143.

    PMID: 35167156
  5. 5

    Genetic biases related to chronic venous ulceration.

    Stana J, Maver U, Potočnik U

    Journal of wound care 2019; (28(2)):59-65 doi:10.12968/jowc.2019.28.2.59.

    PMID: 30767642
  6. 6

    Ultrasound Evaluation of Chronic Venous Insufficiency.

    Zalaquett E, Gunabushanam G, Vallejos A, Dahiya N

    Ultrasound quarterly 2023; (39(1)):2-9 doi:10.1097/RUQ.0000000000000634.

    PMID: 36651650
  7. 7

    Clinical Role of the "Venous" Ultrasound to Identify Lower Extremity Pathology.

    Aurshina A, Ascher E, Hingorani A, et al.

    Annals of vascular surgery 2017; (38()):274-278 doi:10.1016/j.avsg.2016.05.113.

    PMID: 27531093
  8. 8

    Automated devices for identifying peripheral arterial disease in people with leg ulceration: an evidence synthesis and cost-effectiveness analysis.

    Boyers D, Cruickshank M, Aucott L, et al.

    Health technology assessment (Winchester, England) 2024; (28(37)):1-158 doi:10.3310/TWCG3912.

    PMID: 39186036
  9. 9

    Ankle Brachial Index: Quick Reference Guide for Clinicians: WOCN Society Ankle Brachial Task Force.

    Conyers Y, Lomauro C, Richmond A, et al.

    Journal of wound, ostomy, and continence nursing : official publication of The Wound, Ostomy and Continence Nurses Society 2025; (52(4)):271-278 doi:10.1097/WON.0000000000001188.

    PMID: 40717253
  10. 10

    Indications for medical compression stockings in venous and lymphatic disorders: An evidence-based consensus statement.

    Rabe E, Partsch H, Hafner J, et al.

    Phlebology 2018; (33(3)):163-184 doi:10.1177/0268355516689631.

    PMID: 28549402
  11. 11

    A scoping review on Chronic Venous Disease and the development of a Venous Leg Ulcer: The role of obesity and mobility.

    Meulendijks AM, Franssen WMA, Schoonhoven L, Neumann HAM

    Journal of tissue viability 2020; (29(3)):190-196 doi:10.1016/j.jtv.2019.10.002.

    PMID: 31668667
  12. 12

    Effectiveness of endovenous ablation techniques and surgery for great saphenous vein incompetence: a comprehensive meta-analysis of randomized controlled trials.

    Sayarer C, Arayici ME, Gencpinar T, Bayrak S

    Scientific reports 2026; (16(1)).

    PMID: 41764322
  13. 13

    A Randomized Trial of Early Endovenous Ablation in Venous Ulceration.

    Gohel MS, Heatley F, Liu X, et al.

    The New England journal of medicine 2018; (378(22)):2105-2114 doi:10.1056/NEJMoa1801214.

    PMID: 29688123

This page is for informational purposes only and does not constitute medical advice. Your clinician should interpret your ultrasound and ABI and recommend the safest compression or procedure for your situation.