Sensations of heaviness, fatigue, leg cramps, or visible blue veins in the legs are common conditions, particularly among individuals who stand for extended periods, pregnant women, and older adults. These may be early signs of chronic venous insufficiency (CVI) of the lower extremities—a chronic vascular disease that, if not detected and treated promptly, can lead to edema, phlebitis, skin ulceration, or deep vein thrombosis (DVT).
At Dr. Vein, a specialized clinic dedicated to treating venous insufficiency, patients receive accurate diagnosis through modern 2D Doppler ultrasound and treatment using minimally invasive procedures such as EVLA, UGFS, cyanoacrylate adhesive, or sclerotherapy, helping eliminate diseased veins without surgery, leaving no scars, and enabling same-day recovery.
What are varicose veins of the extremities?
Lower extremity varicose vein (also known as leg vein insufficiency) is a condition where the valves within the venous system become weakened or damaged, preventing blood from flowing back to the heart in the correct direction. Blood pools in the lower extremities, causing veins to bulge, protrude in a tortuous pattern beneath the skin, and produce sensations of heaviness, fatigue, tingling, or edema.
The disease progresses slowly and silently, but prolonged duration can lead to phlebitis, thrombosis, or non-healing leg ulcers, significantly impacting quality of life.
Causes and Risk Factors
| Risk Factor Category | Typical Examples |
| Hereditary – Age | Family history of venous disease, older adults, naturally weakened vessel walls |
| Occupational Characteristics | Prolonged standing (teachers, retail workers, physicians), prolonged sitting (office workers) |
| Hormonal Changes | Pregnancy, postpartum period, perimenopause, menopause |
| Lifestyle – Physical Condition | Sedentary lifestyle, overweight/obesity, smoking, tight clothing, high heels |
When venous valves become incompetent, blood flows backward (reflux), causing circulatory stasis, increasing venous wall pressure and causing progressive venous dilation over time.
Early Warning Signs
- Patients with venous insufficiency commonly experience:
- Sensation of leg heaviness and fatigue, especially after prolonged standing or sitting
- Nocturnal leg cramps, tingling sensations, or burning along the calf
- Mild edema around the ankle, which decreases when legs are elevated
- Visible blue, tortuous veins beneath the skin
- Darkened, thickened skin on the lower leg or appearance of slow-healing ulcers
CEAP Classification of Chronic Venous Disease
- C0: No visible signs
- C1: Telangiectasia or reticular veins
- C2: Varicose veins
- C3: Edema
- C4: Skin changes (pigmentation, eczema)
- C5: Healed venous ulcer
- C6: Active venous ulcer
Approximately 70% of patients present at stages C3–C4. If detected early at C1–C2, the disease can be treated definitively without surgery.
Potential Complications
Without treatment, the condition may lead to:
- Superficial thrombophlebitis: Pain, redness, swelling along the affected vessel
- Deep vein thrombosis (DVT): May cause pulmonary embolism, life-threatening condition
- Chronic leg ulceration: Difficult to heal, prone to infection
- Skin pigmentation changes: Darkened, thickened skin, lower limb deformity
- Early treatment helps prevent complications, reduce symptoms, and preserve lower limb circulatory function.
Diagnosis of Chronic Venous Insufficiency
At Dr. Vein, patients undergo comprehensive evaluation including:
1. Specialized Vascular Clinical Examination
Physicians assess symptoms, lifestyle habits, risk factors, and CEAP classification.
2. 2D/3D Venous Doppler Ultrasound
Determines blood flow direction, degree of valve insufficiency, lesion location, and presence of thrombus.
Dr. Vein utilizes state-of-the-art 2D Doppler systems, providing high-resolution imaging and accuracy to support physicians in developing personalized treatment protocols for each case.
Treatment Modalities at Dr. Vein
| Modality | Mechanism | Key advantages |
| Endovenous Laser Ablation (EVLA) | Uses laser energy to seal incompetent veins | Non-surgical, minimal pain, rapid recovery |
| Ultrasound-Guided Foam Sclerotherapy (UGFS) | Injects sclerosant foam into diseased veins under ultrasound guidance | Precise targeting, high efficacy |
| Sclerotherapy for Superficial Veins | Injects sclerosing solution to obliterate small dilated vessels | Quick, aesthetic results, no anesthesia required |
| Radiofrequency Ablation (RFA) | Contracts venous walls using radiofrequency energy | Highly effective, minimal scarring, same-day discharge |
| Cyanoacrylate adhesive closure | Injects medical adhesive to seal vessels | No anesthesia required, virtually painless |
According to Dr. Le Kim Cao—Vascular Surgeon at Dr. Vein—over 80% of patients recover within just one day of treatment, requiring no hospitalization and leaving no scars.
Post-Treatment Care
- Light walking permitted after 24 hours
- Significant symptom reduction within 2-3 days
- Wear medical compression stockings as directed by physician
- Engage in gentle exercise: walking, yoga, cycling
- Avoid prolonged standing or sitting in one position
- Maintain stable body weight, adequate hydration
Prevention of Chronic Venous Insufficiency
- Maintain regular physical activity (walking, swimming, yoga)
- Maintain healthy body weight, avoid obesity
- Avoid prolonged standing or sitting in one position
- Wear medical compression stockings during long working hours
- Stay well-hydrated, limit tobacco and alcohol consumption
Maintaining a healthy lifestyle reduces disease recurrence risk by 35-45% according to ESVS 2022 guidelines.
Why Choose Dr. Vein?
| Key Advantages | Patient Benefits |
| Leading Vascular Specialists | Direct examination and treatment by physicians with years of experience at Cho Ray Hospital |
| Advanced Technology | EVLA, UGFS, Cyanoacrylate Adhesive, 2D Doppler |
| Personalized Treatment Plans | Each patient receives customized protocols optimizing treatment effectiveness |
| Lifetime Follow-up | Complimentary periodic follow-up examinations and ultrasound |
| “Absolute Trust” Philosophy | Transparent, safe, long-term patient partnership |
Frequently Asked Questions (FAQ)
Is chronic venous insufficiency dangerous?
The disease progresses slowly, but without treatment, can cause phlebitis, thrombosis, and chronic skin ulceration.
Is laser treatment painful?
No. Patients only feel slight warmth, no general anesthesia required, and can walk immediately after treatment.
How long is recovery after treatment?
Typically, patients recover and resume normal activities within 24-48 hours.
Where should I seek treatment?
Dr. Vein—Vietnam’s first specialized venous center, featuring leading vascular surgeons and modern technology.
Physician Recommendation
“Chronic venous insufficiency of the lower extremities is a chronic disease but can be completely controlled and effectively treated if detected early. Patients should not be complacent or attempt self-treatment at home, as the disease can progress severely and cause irreversible complications.”
— Dr. Le Kim Cao, MSc, Vascular Surgeon – Dr. Vein
References
European Society for Vascular Surgery (ESVS). Guidelines on Chronic Venous Disease, 2022
NICE Clinical Guideline CG168: Varicose Veins in the Legs, 2023
PubMed: Efficacy of Endovenous Laser Ablation for Chronic Venous Insufficiency, 2022
Cleveland Clinic: Varicose Veins – Diagnosis & Treatment, 2024
Dr. Vein Internal Clinical Protocol, 2025
Contact Information
Dr. Vein Vascular Clinic
- Address: No. 2, My Toan 2 Residential Area, Tan Phong, District 7, Ho Chi Minh City
- Hotline: 0932.19.28.82
- Website: drvein.vn
- Business Hours: Monday – Saturday, 8:00 AM – 5:00 PM
What Stage Are You At?
Varicose veins are classified into 6 clinical stages, presenting with characteristic symptoms that are distinctly visible to the naked eye.
C1
Appearance of blue or purple spider veins, less than 3mm in diameter
C2
Dilated superficial veins larger than 3mm, forming visible clusters
C3
Leg swelling without skin discoloration
C4
Skin discoloration (venous eczema)
C5
Skin discoloration with healed ulcer
C6
Skin discoloration with non-healing ulcer
Varicose vein treatment results
Actual before-and-after images by disease stage
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UGFS Foam Sclerotherapy for Great Saphenous Vein: Noticeable Symptom Relief in 3 Weeks
Sclerotherapy for Varicose Veins: Multidisciplinary Approach for Patients with Combined Symptoms
EVLA Combined With Sclerotherapy For Effective Bilateral Varicose Vein Treatment
EVLA & UGFS: Effective Control of Varicose Vein Reflux Stage 2
UGFS Relieves Calf Heaviness For Patients In Stage 1
UGFS and Sclerotherapy in the Varicose Veins Treatment Stage 1
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Online consultation
Free Online Consultation
with a Vascular Specialist
Send us a photo and describe your symptoms —our specialists will assess your condition and determine the stage of your varicose veins.
Can varicose veins heal on their own?
Varicose veins are a chronic condition progressing through 6 stages (C0-C6) and cannot heal without medical intervention. Early diagnosis via Doppler ultrasound allows the physician to accurately evaluate venous reflux and establish a protocol to prevent severe complications such as venous ulcers or thrombosis.
Is there a risk of recurrence after treatment?
With an accurate protocol that radically eliminates the root cause of venous reflux, the recurrence rate is kept extremely low. Each case is closely monitored by the physician through scheduled periodic follow-ups, combined with tailored lifestyle advice to maintain healthy legs long-term.
What signs indicate I should seek a vascular specialist immediately?
The interventional procedures at Dr. Vein are very quick. For Sclerotherapy or UGFS, the procedure lasts only 10 to 20 minutes. For EVLA, it takes about 30 minutes. Patients can walk normally immediately after completion.
I have tiny visible blue veins but no pain. Do I need treatment?
Tiny, visible reticular or spider veins (classified as stage C1) may not cause severe pain yet, but they are early signs of venous insufficiency and pose aesthetic concerns. If left untreated, the condition can progress. Early intervention with sclerotherapy effectively fades these visible veins, restoring the cosmetic appearance of your legs and preventing further progression.