Chronic Venous Insufficiency: What It Is, Why It Happens, and How It’s Treated
Medically verified

By Dr. Michael Nguyen
Harvard Medical School
Board Certified by the American Board of Venous and Lymphatic Medicine
Many patients live with symptoms of venous insufficiency for years without realizing there is an underlying circulation problem. Swelling, heaviness, skin discoloration, or recurrent vein issues are often mistaken for normal aging or lifestyle-related changes.
If you’re experiencing ongoing leg symptoms or skin changes, a vein evaluation can help determine whether chronic venous insufficiency is the underlying cause.
What is chronic venous insufficiency?
This ongoing pressure damages the veins over time and leads to progressive symptoms affecting circulation and skin health.
What causes chronic venous insufficiency?
Prolonged standing, obesity, and untreated varicose veins can worsen venous pressure and contribute to progression.
What symptoms are associated with chronic venous insufficiency?
As the condition progresses, skin changes such as darkening, thickening, itching, or open sores may develop near the ankles.
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How is chronic venous insufficiency related to varicose veins?
Not all patients with venous insufficiency have large varicose veins, but many share the same underlying circulation problem.
Learn more about the connection between CVI and varicose veins
How is chronic venous insufficiency diagnosed?
Ultrasound helps identify reflux, vein damage, and the extent of disease, guiding treatment decisions.
Is chronic venous insufficiency dangerous?
Advanced cases may result in significant skin damage, chronic inflammation, and venous ulcers that are difficult to heal.
Learn more about risks and complications of venous insufficiency
Table of contents
1. What is chronic venous insufficiency?
2. What causes chronic venous insufficiency?
3. What symptoms are associated with chronic venous insufficiency?
4. How is chronic venous insufficiency related to varicose veins?
5. How is chronic venous insufficiency diagnosed?
6. Is chronic venous insufficiency dangerous?
7. What are the treatment options for chronic venous insufficiency?
8. Can chronic venous insufficiency get worse over time?
9. When should you see a vein specialist?
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What are the treatment options for chronic venous insufficiency?
Modern treatments target the underlying vein dysfunction rather than just surface symptoms.
Can chronic venous insufficiency get worse over time?
Early evaluation and treatment can slow progression and improve quality of life.
Learn more about progression of chronic venous insufficiency
When should you see a vein specialist?
A vein specialist can determine whether symptoms are related to venous insufficiency and whether treatment is appropriate.
Learn more about when to see a vein specialist for CVI
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About the Medical Team at Vein Treatment Clinic
Clinical leadership at Vein Treatment Clinic is guided by board-certified vein specialists, including Dr. Michael Nguyen, whose training and experience help shape the clinic’s rigorous standards of care.
All physicians at Vein Treatment Clinic follow a structured, highly standardized clinical model. This includes ongoing training in the latest non-surgical vein treatments, continuous review of emerging research, and strict adherence to proven safety and quality protocols.
Patients benefit from a team-based model of care where expertise is shared, best practices are consistently applied, and treatment recommendations are driven by data, experience, and long-term results.

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