CHRONIC VENOUS INSUFFICIENCY (CVI) is a long-term medical condition in which the veins in the legs fail to return blood to the heart efficiently. Damaged vein valves, obstruction in the veins, or dysfunction of the calf muscle pump usually cause this insufficiency. CVI is a progressive disorder that can lead to varicose veins, skin changes, leg ulcers, and impaired quality of life if left untreated.
Epidemilogy (Spread and Control)
- CVI is a common vascular disorder, affecting 10-35% of adults worldwide.
- More prevalent in women than men, particularly after the age of 50.
- Risk increases with obesity, pregnancy, sedentary life style, prolonged standing/sitting, and family history of venous disease.
Causes and Risk Factors
The main cause of CVI is venous hypertension due to valve dysfunction or obstruction.
Major risk factors include:
- Genetic predisposition-family history of varicose veins or venous disease.
- Ageing- Natural wear and tear on venous valves.
- Female sex & hormonal changes- Pregnancy and hormonal therapies weaken vein valves.
- Lifestyle factors- Obesity, lack of exercise, and occupations involving prolonged standing or sitting.
- Deep vein thrombosis (DVT)- History of DVT can damage valves (post-thrombotic syndrome).
- Trauma or surgery involving leg veins.
Pathophysiology (functional changes that occur in the body)
- Healthy veins have one-way valves that prevent backflow of blood.
- In CVI, valve failure or vein wall weakness leads to retrograde blood flow and venous pooling in the lower limbs.
- Increase venous pressure causes capillary leakage, tissue edema, inflammation, and eventually skin damage and ulceration.
Signs and Symptoms
CVI symptoms are chronic and progressive, often worsening throughout the day.
1 Early Symptoms
- Leg heaviness or fatigue (especially after prolonged standing).
- Aching, throbbing, or cramping pain.
- Swelling (edema) in the ankles or lower legs.
2 Visible changes
- Varicose veins-enlarged, twisted, superficial veins.
- Skin hyper pigmentation (brownish discoloration due to hemosiderin deposition).
- Lipodermatosclerosis- skin thickening and fibrosis around ankles.
3 Advanced changes
- Venous ulcers.
- Eczema or dermatitis around affected area.
- Recurrent infections like cellulitis.
Clinical Staging (CEAP Classification)
- C0- No visible changes
- C1- Telengiectasia (spider veins)
- C2- Varicose veins
- C3- Edema
- C4- Skin changes (pigmentation, eczema, and lipodermatosclerosis)
- C5- Healed venous ulcer
- C6- Active venous ulcer
Diagnosis
It is based on clinical evaluation and confirmed with imaging.
1 Physical examination– Inspect legs for edema, varicisites, skin changes, ulcers.
2 Duplex ultrasonography– Gold standard for assessing venous reflux and obstruction.
3 Venography (rarely used)- Invasive, reserved for complex cases.
4 Plethysmography– Measures venous function and reflux.
Complications
They are- Recurrent leg ulcers (difficult to heal), Infections such as cellulitis, Deep vein thrombosis (DVT) and Impaired mobility and reduced quality of life.
Treatment and Management
Management focuses on reducing venous pressure, improving circulation, and preventing complications.
1 Conservative(Non Surgical) Treatment
–Compression therapy
- Graduated compression stockings are first-line treatment.
- Improves venous return and reduces edema.
–Lifestyle modifications
- Elevate legs periodically.
- Regular exercise (walking, calf muscle strengthening).
- Weight loss in obese patients.
-Pharmacotherapy
- Venoactive drugs reduce symptoms.
- Topical agents for skin changes.
2 Interventional/Surgical Treatments
For severe or refractory cases:
- Endovenous thermal ablation– Minimally invasive closure of refluxing veins.
- Sclerotherapy– Injection of sclerosant to obliterate varicose veins.
- Surgical vein stripping– removal of deceased veins.
- Ulcer management– Debridement, dressings, negative pressure wound therapy.
With proper management, CVI progression can be controlled and symptoms improved. Untreated CVI may lead to chronic ulcers, infections, and disability. Lifelong follow-up may be necessary for advanced cases.
In the end, CVI is a prevalent yet often under diagnosed vascular disorder. Early recognition, lifestyle modifications, compression therapy and timely interventions can significantly improve patient outcomes and prevent serious complications. As awareness grows and minimally invasive techniques, effective management of CVI continues to improve, enhancing both quality of life and functional mobility for affected individuals.
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Anil Malik
Mumbai, India
6th August 2025