Chronic Venous Insufficiency (CVI): Symptoms, Management & UK Online Doctor Support

Chronic Venous Insufficiency (CVI) is a progressive long-term condition that affects the efficiency of blood flow in the legs. In a healthy body, one-way valves in the veins ensure that blood flows upwards towards the heart. When these valves become weakened or damaged, blood can pool in the legs—a process known as venous reflux.

According to NICE guidelines and NHS standards, CVI is often associated with venous hypertension (increased pressure in the leg veins). While it is common in older adults, it can affect people of various ages, particularly those with a history of deep vein thrombosis (DVT), prolonged standing, or obesity. Managing CVI is essential not just for comfort, but to prevent the development of more serious complications like stasis dermatitis and leg ulcers.

The symptoms of Chronic Venous Insufficiency often develop slowly and may be worse at the end of the day or in warm weather. Patients typically report a heavy or 'bursting' sensation in the lower limbs.

Common signs to look out for:

• Swelling (Oedema): Often starting around the ankles and improving overnight after rest.
• Aching and Cramping: A dull ache or throbbing sensation, especially after sitting or standing for long periods.
• Skin Changes: The skin may become discoloured (brownish-red), itchy, dry, or leathery in texture.
• Varicose Veins: Enlarged, twisted veins that are visible beneath the skin surface.
• Restless Legs: An uncomfortable urge to move the legs, often during the night.

CVI is primarily caused by damage to the vein walls or valves. Several factors increase the likelihood of developing the condition in the UK population:

• Age and Gender: It is more prevalent in women and the elderly.
• Family History: Genetics plays a significant role in vein health.
• Obesity: Excess weight puts significant pressure on the veins in the lower body.
• Pregnancy: Hormonal changes and increased blood volume can strain the venous system.
• Past Trauma: A previous history of leg injuries or blood clots (DVT) can permanently damage valves.
• Sedentary Lifestyle: Jobs that require long periods of sitting or standing without movement hinder the 'calf pump' mechanism.

The primary goal of CVI management is to improve circulation and reduce the pressure in the leg veins. Following NICE clinical knowledge summaries, treatment usually begins with conservative measures.

Self-Care Strategies

Patients are encouraged to elevate their legs above the level of the heart for 30 minutes several times a day. Regular walking is also vital, as the contraction of the calf muscles helps push blood back towards the heart. Maintaining a healthy weight and avoiding tight clothing around the waist or tops of the legs can also assist in symptom management.

Compression Therapy

Medical-grade compression stockings are the cornerstone of CVI treatment. These apply graduated pressure, being tightest at the ankle and loosening further up the leg. This helps prevent blood from pooling. It is important to have your legs measured correctly to ensure the stockings are effective and comfortable.

Ignoring the early signs of CVI can lead to irreversible changes. One common complication is venous eczema (also called varicose eczema), where the skin becomes red, scaly, and prone to infection. Over time, the skin can undergo 'lipodermatosclerosis', where the fat under the skin hardens and the ankle area narrows.

The most serious complication is a venous leg ulcer. These are chronic wounds that take more than two weeks to heal. Because the circulation is poor, the body struggles to repair the tissue, making these ulcers difficult to treat without specialist intervention from a vascular team or wound care clinic.

If you are experiencing persistent leg swelling, skin discolouration, or aching that interferes with your daily life, you should speak to a GP online. An online consultation is a convenient first step for an initial assessment of your symptoms.

An online doctor can:

• Evaluate your risk factors and symptom history.
• Provide guidance on the correct class of compression hosiery.
• Advise on topical treatments for itching or skin dryness.
• Issue a sick note if your condition significantly impacts your ability to work.
• Determine if you require a physical examination or a referral for a Doppler ultrasound to check blood flow.

Seeking help early can stop the progression from simple varicose veins to more debilitating skin ulcers.