Chronic Venous Leg Ulcers: Symptoms, Treatment & UK Online Doctor Support

A venous leg ulcer is a chronic, long-lasting sore that takes more than two weeks to heal. It typically develops on the inside of the leg, just above the ankle. In the United Kingdom, these ulcers are a significant health concern, particularly among the elderly and those with restricted mobility. According to NHS guidance, venous ulcers account for approximately 80% of all leg ulcers.

The root cause is usually chronic venous insufficiency. This occurs when the valves in the leg veins do not function correctly, allowing blood to flow backwards and pool in the lower leg. This increased pressure (venous hypertension) causes fluid to leak into the surrounding tissue, leading to inflammation and, eventually, the breakdown of the skin.

Recognising a venous ulcer early can significantly improve healing times. While the ulcer itself is the most obvious sign, the surrounding skin often provides clues about the underlying venous health. Symptoms include:

• A shallow sore: Usually with irregular borders and a red or yellow base.
• Oedema: Swelling in the ankles and lower legs that often worsens throughout the day.
• Skin discolouration: The skin around the ulcer may become brown or rusty-looking due to iron deposits from leaked blood (haemosiderin staining).
• Varicose eczema: Red, scaly, and itchy skin on the lower legs.
• Lipodermatosclerosis: Hardened, thickened skin that may feel tight or woody to the touch.
• Aching or heaviness: A persistent dull ache in the legs that improves when the limb is elevated.

Several factors increase the likelihood of developing a chronic venous ulcer. Understanding these can help in the long-term management of the condition. Primary risk factors include:

• Age and Mobility: Being over 65 or having conditions that limit walking (which reduces the 'calf pump' action that helps blood return to the heart).
• Obesity: Excess weight increases the pressure on the venous system.
• Previous Deep Vein Thrombosis (DVT): A history of blood clots can damage the valves within the veins.
• Varicose Veins: Enlarged veins are a primary indicator of poor venous return.
• Leg Injuries: Previous fractures or surgeries can disrupt the vascular or lymphatic systems.

Treatment for venous ulcers in the UK follows strict NICE (National Institute for Health and Care Excellence) pathways to ensure effective healing and prevent recurrence. The 'gold standard' treatment involves a combination of the following:

Cleaning and Dressing

The wound must be kept clean. A healthcare professional will remove dead tissue (debridement) and apply a non-adherent dressing. Dressings are changed regularly depending on the amount of fluid (exudate) the ulcer produces.

Compression Therapy

This is the most critical element of treatment. Graduated compression bandages or stockings apply pressure to the leg, helping the veins push blood back toward the heart. A Doppler ultrasound test is required before starting compression to ensure there is no significant arterial disease, as applying compression to an arterial ulcer can be dangerous.

Lifestyle Modifications

Patients are encouraged to elevate their legs above the level of their heart whenever possible and to stay as active as their mobility allows. Stopping smoking and maintaining a healthy weight are also vital for vascular health.

If you have a sore on your leg that has not healed within two weeks, you should seek medical advice. You can speak to a GP online via OnlineDoctor24 for a convenient initial assessment. Our doctors can review your symptoms, discuss your medical history, and provide guidance on the next steps.

An online GP consultation is particularly useful for:

• Initial assessment of leg discolouration or swelling before an ulcer develops.
• Reviewing signs of infection in an existing ulcer.
• Discussing long-term management strategies for venous insufficiency.
• Obtaining referrals to local NHS tissue viability clinics or vascular specialists for a Doppler test and compression fitting.
• Seeking a sick note if your condition limits your ability to work during a flare-up.

Once a venous ulcer has healed, the risk of recurrence remains high unless the underlying venous issue is managed. NICE recommends that patients who have had a venous ulcer should be assessed for endovenous laser ablation or other surgical interventions to treat the underlying varicose veins. Furthermore, the lifelong use of compression stockings is often required to maintain healthy circulation and protect the skin from further breakdown.