Peripheral Arterial Disease (PAD): Symptoms, Causes and Management in the UK

Peripheral Arterial Disease (PAD) is a chronic condition affecting the blood vessels outside the heart and brain. In the UK, it is estimated that around 1 in 5 people over the age of 60 have some degree of PAD. It occurs when fatty deposits, known as atheroma, build up on the walls of the arteries that supply blood to the legs. This process is called atherosclerosis.

As these arteries narrow, the flow of oxygen-rich blood to the leg muscles is restricted. While many people with PAD have no symptoms, others experience significant discomfort that impacts their mobility. According to NHS guidance, PAD is not just a leg problem; it is a strong indicator of atherosclerosis elsewhere in the body, meaning patients are at a higher risk of coronary heart disease and stroke.

The classic symptom of PAD is known as intermittent claudication. This is a painful ache or cramp-like sensation in the leg muscles (usually the calves, but sometimes the thighs or buttocks) that is triggered by physical activity, such as walking or climbing stairs.

• Predictability: The pain usually starts after walking a certain distance.
• Relief: The discomfort typically eases within five to ten minutes of standing still.
• Sensation: Patients often describe it as a heaviness, tightness, or cramping rather than a sharp stabbing pain.

Other signs of poor circulation in the legs include hair loss on the legs and feet, brittle or slow-growing toenails, and skin that appears pale, shiny, or feels cold to the touch compared to the rest of the body. If you notice these changes, it is important to speak to a GP online or in person to assess your vascular health.

Atherosclerosis is the underlying cause of PAD, but several factors significantly increase the likelihood of developing the condition. The National Institute for Health and Care Excellence (NICE) highlights several key risk factors that UK patients should be aware of:

• Smoking: This is the single most significant risk factor. Chemicals in tobacco smoke damage the artery walls and speed up the accumulation of fatty plaques.
• Diabetes: High blood sugar levels can damage blood vessels over time.
• High Blood Pressure (Hypertension): Constant pressure weakens artery walls.
• High Cholesterol: Excess LDL cholesterol provides the building blocks for arterial plaques.
• Age and Genetics: Risk increases as you get older or if you have a family history of cardiovascular disease.

Diagnosis usually begins with a physical examination where a GP will check the pulses in your legs and feet. A weak or absent pulse can suggest PAD. The primary diagnostic tool used in the UK is the Ankle Brachial Pressure Index (ABPI) test.

The ABPI test compares the blood pressure in your ankle with the blood pressure in your arm. A significant difference between the two suggests that the blood flow in your legs is obstructed. In some cases, you may be referred for further imaging, such as a duplex ultrasound, CT scan, or MRI, to pinpoint the exact location of the arterial narrowing.

The goals of managing PAD are twofold: improving leg symptoms and reducing the overall risk of cardiovascular events. Lifestyle modifications are the cornerstone of treatment. NICE guidelines recommend:

Smoking Cessation

Quitting smoking is the most effective way to stop PAD from worsening. Your GP can provide access to NHS smoking cessation services, including nicotine replacement therapy (NRT).

Supervised Exercise Programmes

It may seem counterintuitive to walk when it causes pain, but regular exercise actually helps improve blood flow. A supervised programme typically involves walking until the pain reaches a moderate level, resting until it subsides, and repeating for at least 30 minutes, three times a week.

Dietary Adjustments

Adopting a Mediterranean-style diet, low in saturated fats and high in whole grains, fruits, and vegetables, helps manage cholesterol and blood pressure levels.

Most patients with PAD will require medication to manage their cardiovascular risk. Common prescriptions include:

• Statins: Such as atorvastatin, to lower cholesterol and stabilise arterial plaques.
• Antiplatelets: Such as low-dose aspirin or clopidogrel, to prevent blood clots from forming.
• Antihypertensives: To keep blood pressure within a healthy range (usually below 140/90 mmHg).
• Naftidrofuryl oxalate: Sometimes prescribed if exercise therapy does not sufficiently improve walking distance.

In severe cases where lifestyle and medication are not enough, surgical interventions like an angioplasty (widening the artery with a balloon) or a bypass graft may be necessary.

Managing a long-term condition like PAD requires consistent monitoring. While physical tests like ABPI must be done in a clinic, an online doctor in the UK can play a vital role in your ongoing care pathway. Through a digital consultation, you can:

• Discuss new or worsening leg symptoms.
• Receive guidance on smoking cessation and weight management.
• Review your current medications, such as statins or blood pressure tablets.
• Obtain sick notes if your mobility is severely impacted by claudication.
• Discuss your cardiovascular risk profile based on recent blood test results.

Using a private GP service allows for longer, more detailed discussions about lifestyle changes, helping you stay motivated with your exercise plan and medication adherence.