When leg veins fail, blood pools and pressure builds, but relief is often simple.

Health · Published 3 October 2026 Swipe more like this →

In short: Chronic venous insufficiency occurs when leg veins struggle to return blood to the heart, causing it to pool and increase pressure. While often painful, leading to swelling, cramps, and skin changes, the condition is rarely a serious threat. Understanding why your veins fail is the first step toward effective management.

Chronic venous insufficiency (CVI) arises when the valves in your leg veins fail to direct blood back to your heart, allowing it to flow backward and collect in the lower limbs. This pooling creates high pressure within the veins, which can eventually cause tiny capillaries to burst. Over time, this damage manifests as swelling, painful cramps, and a characteristic reddish-brown skin discoloration near the ankles. If left untreated, the skin may break down, leading to venous stasis ulcers that are notoriously difficult to heal and susceptible to dangerous infections like cellulitis.

Risk factors for CVI are diverse, ranging from lifestyle choices like smoking and lack of exercise to physiological states such as pregnancy and obesity. A history of deep vein thrombosis (DVT)—a blood clot in a deep vein—is a major contributor, as the resulting scar tissue can permanently impair valve function. While CVI affects approximately 1 in 20 adults, it is significantly more common in those over age 50. Diagnosis typically involves a physical exam and a Duplex ultrasound, which visualizes the speed and direction of blood flow to confirm the extent of the valvular incompetence.

Treatment focuses on improving circulation and managing symptoms. Conservative measures include regular exercise, elevating the legs to reduce swelling, and wearing compression stockings. For more severe cases, medical interventions aim to close or remove the damaged veins. Minimally invasive procedures like endovenous laser ablation (EVLA) and radiofrequency ablation (RFA) use heat to seal off affected vessels, while sclerotherapy uses chemical injections to induce scarring. In extreme instances, surgeons may perform ligation or vein stripping. A recent meta-analysis of 22,814 patients suggests that while RFA may offer better short-term postoperative comfort, both RFA and EVLA are safe and effective, with neither providing a clear, clinically superior advantage for long-term patient quality of life.

General information, not professional advice. Spotted an error? Flag the card or see corrections and complaints.

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