Chronic Venous Insufficiency (CVI): Long-Term Leg Health and Management in the UK

Chronic Venous Insufficiency (CVI) is a long-term condition where the valves in the leg veins do not work effectively. Normally, these one-way valves ensure that blood flows upwards towards the heart against gravity. When they become damaged or weakened, blood can flow backwards and pool in the lower legs—a process known as venous reflux.

According to NHS data, venous issues are highly common in the UK, particularly among older adults, pregnant women, and those with jobs requiring long periods of standing. If left unmanaged, the increased pressure (venous hypertension) can lead to complications like skin discolouration, inflammation, and chronic leg ulcers.

The symptoms of CVI often develop gradually and may be worse at the end of the day or in warm weather. Patients frequently report:

• Aching or heaviness: A persistent dull ache in the calves or thighs.
• Oedema: Swelling in the ankles and lower legs that typically improves after a night's sleep.
• Skin changes: The skin may become reddish-brown, leathery, or itchy (varicose eczema).
• Varicose veins: Visible, twisted veins that may bulge under the skin.
• Restless legs: An uncomfortable urge to move the legs, especially at night.

Several factors contribute to the weakening of vein valves. Understanding these can help in managing the condition effectively. Primary causes include:

• Deep Vein Thrombosis (DVT): A previous blood clot can damage the valves permanently.
• Genetics: A family history of varicose veins or CVI increases your risk.
• Obesity: Excess weight puts significant pressure on the veins in the lower extremities.
• Pregnancy: Hormonal changes and increased blood volume can strain the venous system.
• Lifestyle: Prolonged sitting or standing prevents the 'calf muscle pump' from assisting blood flow.

Management of CVI in the UK follows NICE (National Institute for Health and Care Excellence) guidance, focusing on symptom relief and preventing progression. Common strategies include:

Compression Therapy

Compression stockings are the cornerstone of CVI management. They apply graduated pressure to the legs, helping veins move blood upwards. A GP or nurse will typically perform an Ankle Brachial Pressure Index (ABPI) test to ensure compression is safe for you.

Lifestyle Modifications

Patients are encouraged to elevate their legs above heart level when resting, maintain a healthy weight, and engage in regular walking to strengthen the calf muscles. Avoiding long periods of inactivity is crucial.

Medical Interventions

For advanced cases, a GP may refer you to a vascular specialist for procedures such as endothermal ablation, sclerotherapy, or vein surgery to close off damaged veins.

If you are experiencing persistent leg heaviness, swelling, or have noticed new skin changes, it is important to seek medical advice. You can speak to a GP online to discuss your symptoms from the comfort of your home. An online GP can:

• Review your medical history and assess the severity of your symptoms.
• Provide advice on the correct grade of compression stockings.
• Issue prescriptions for topical treatments for varicose eczema.
• Provide a private referral for a vascular ultrasound or specialist consultation if required.
• Issue a sick note if your symptoms significantly impact your ability to work.

Ignoring the signs of CVI can lead to more serious health issues. The most common complication is a venous leg ulcer, which is a long-lasting sore that can be difficult to heal and prone to infection. Other risks include lipodermatosclerosis (hardening of the fat under the skin) and an increased risk of cellulitis (a bacterial skin infection).