Chronic Venous Insufficiency: Managing Leg Health and Circulation in the UK

Chronic Venous Insufficiency (CVI) is a long-term medical condition where the veins in the legs have difficulty sending blood back to the heart. In a healthy body, one-way valves in the veins prevent blood from flowing backward. When these valves become damaged or weakened—a state often called venous reflux—blood begins to pool in the lower legs.

This pooling increases the pressure in the veins, leading to discomfort, swelling, and eventually skin changes. In the UK, CVI is a common condition, particularly among older adults, those with a history of deep vein thrombosis (DVT), and individuals who spend long periods standing or sitting. According to NICE (National Institute for Health and Care Excellence) guidelines, management focuses on reducing venous pressure and improving blood flow to prevent severe complications like ulcers.

CVI is a progressive condition, meaning symptoms often start mildly and worsen over years if not addressed. You may notice that discomfort is worse at the end of the day or after prolonged periods of standing.

Common signs include:

• Swelling (Oedema): Often occurring around the ankles and calves, typically improving overnight when the legs are elevated.
• Heavy or Aching Legs: A persistent dull ache or a feeling of 'fullness' in the lower limbs.
• Varicose Veins: Enlarged, twisted veins that may be visible just under the surface of the skin.
• Skin Changes: The skin may become discoloured (hyperpigmentation), dry, itchy (varicose eczema), or take on a leathery texture (lipodermatosclerosis).
• Restless Legs: An uncomfortable urge to move the legs, particularly in the evening.

Several factors contribute to the weakening of vein valves. One of the most significant causes is a previous blood clot in the leg, known as Post-Thrombotic Syndrome. When a clot damages a valve, the resulting CVI can be more difficult to manage.

Other risk factors common in the UK population include:

• Age: The risk increases as we get older and our veins lose elasticity.
• 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.
• Family History: Genetic predispositions to weak vein walls or valves.
• Occupational Factors: Jobs that require standing for long shifts, such as nursing, retail, or hospitality work.

Treatment for CVI aims to manage symptoms and stop the condition from progressing. The NHS typically recommends a combination of conservative measures and medical interventions.

Compression Therapy

Compression stockings are the cornerstone of CVI management. These apply graduated pressure to the legs, squeezing the veins and helping valves function more efficiently. Your GP can measure you for medical-grade stockings that provide the correct level of pressure (measured in mmHg).

Lifestyle Modifications

• Elevation: Raising your legs above the level of your heart for 30 minutes several times a day can significantly reduce swelling.
• Exercise: Regular walking helps the calf muscles pump blood back up the legs.
• Weight Management: Reducing body weight helps decrease the overall load on the circulatory system.
• Skin Care: Using emollients to keep the skin hydrated prevents the cracking and itching associated with venous eczema.

If you are experiencing persistent leg swelling, skin discolouration, or discomfort that affects your daily life, it is important to seek medical advice. You can speak to a GP online to discuss your symptoms and receive a professional assessment without needing to travel to a physical surgery.

During an online GP consultation, the doctor can:

• Review your medical history and assess your risk factors for venous disease.
• Provide guidance on the correct type of compression hosiery.
• Issue prescriptions for emollients or creams for venous eczema.
• Provide sick notes if your condition significantly impacts your ability to perform your job.
• Refer you to a vascular specialist if they suspect you need surgical interventions like endovenous laser ablation or sclerotherapy.

Leaving CVI untreated can lead to serious health issues. The most common complication is a venous leg ulcer, which is a chronic sore that takes a long time to heal due to poor circulation. These ulcers are susceptible to infection and can be very painful.

Another risk is cellulitis, a bacterial infection of the deep layers of the skin. Because CVI often causes skin thinning and inflammation, bacteria can enter the body more easily. Maintaining a consistent management plan, including wearing compression garments daily, is the best way to prevent these long-term issues.