Poor Leg Circulation?

If you have been told that you may have poor circulation in your legs, the first step is to understand the blood-flow problem. The important questions are how much circulation is affected, where the disease is, and whether the foot or leg is at risk.

In this video, I explain what I look for during a vascular assessment for suspected peripheral arterial disease, or PAD. A treatment decision follows that assessment; it is not determined by the phrase “poor circulation” alone.

What is peripheral arterial disease?

Peripheral arterial disease occurs when arteries supplying the legs become narrowed or blocked, commonly because plaque has built up in their walls. Reduced blood flow may limit the oxygen available to the muscles during walking or, in more severe disease, affect the tissues even at rest.

PAD is an arterial problem. Other conditions, including venous disease, nerve problems and joint disorders, can also cause leg symptoms. Establishing the cause matters because their treatments are different.

Which symptoms can suggest poor arterial circulation?

A familiar pattern is discomfort or cramping in the calf, thigh or buttock that starts with walking and eases when you stop. This is called intermittent claudication. Some people also notice coldness, numbness or wounds that are slow to heal.

Symptoms that deserve particular attention include:

• Walking pain that repeatedly limits the same everyday activities.

• Foot or toe pain at rest, especially when persistent or occurring at night.

• A wound or ulcer that is not healing.

• Dark or black tissue, or a new change in foot colour or temperature.

These features need clinical assessment; none should be diagnosed from an online description alone. Diabetes can alter sensation, so a threatened foot may not always be as painful as expected.

What will I ask during the consultation?

The history helps connect the symptoms to what the leg is doing. How far can you walk? Where does the pain occur? Does it settle with rest, and does it return when you start again? Has the walking distance changed? Are there wounds, night pain or symptoms in the other leg?

I also ask about diabetes, kidney disease, smoking, heart disease and previous arterial treatment. Earlier angioplasty, stents or bypass operations can affect both the investigation and the options available. Bring your medication list and previous scan or operation information if you have it.

How are the legs and blood flow examined?

I examine the legs and feet, checking pulses, skin colour, temperature, wounds and signs of infection. The aim is to establish the likely circulation problem and identify whether the foot needs urgent attention.

Tests may include an ankle–brachial pressure measurement, which compares blood pressure at the ankle and arm, and duplex ultrasound to assess blood flow. Diabetes or kidney disease can make ankle-pressure results misleadingly high, so a normal result may not exclude PAD; toe-pressure testing or further assessment may be needed. Other tests or CT angiography may be appropriate when more detailed information is needed, particularly when planning a procedure. The choice depends on the clinical question rather than ordering every available scan.

Does PAD always need angioplasty or surgery?

No. Many patients need a plan built around prescribed medication, management of cardiovascular risk factors and an appropriate structured exercise programme. Stopping smoking and controlling diabetes, blood pressure and cholesterol are important parts of care.

For selected patients, angioplasty, stenting or bypass surgery may improve circulation. A procedure may be considered for symptoms that remain substantially limiting despite suitable treatment, or when blood supply threatens wound healing or limb survival. I weigh the artery pattern, wound risk, expected benefit and overall health together.

The goal is more than opening a narrowed artery on a scan. It is to improve function, support healing when needed and reduce the risk of complications.

When is poor circulation an emergency?

A suddenly painful, cold, pale, numb or weak limb needs immediate emergency assessment. Seek urgent care rather than waiting for a routine appointment. A non-healing wound, black toe or persistent rest pain also needs prompt assessment; do not try to exercise through a threatened or infected foot.

Where can I arrange a circulation assessment in Singapore?

For non-emergency symptoms or review of known PAD, contact Andrew Choong Vascular Surgery at Mount Elizabeth Novena Specialist Centre, #09-22, 38 Irrawaddy Road, Singapore 329563. I will assess your symptoms, examination and blood-flow findings together to discuss a treatment plan suited to you.

What Is Linked to 11 Million Deaths a Year? Sepsis, Foot Wounds and Poor Circulation

Sepsis happens when the body's response to an infection begins to damage its own tissues and organs. It can become life-threatening quickly. In this World Sepsis Day video, I explain why a worsening foot wound deserves particular attention when someone has diabetes or poor circulation.

As a vascular surgeon in Singapore, I look at two linked questions: is the wound infected, and is enough blood reaching the foot for it to heal? Both matter when deciding how urgently someone needs care.

What does the figure of 11 million deaths mean?

The figure in my video reflects a major global estimate: approximately 48.9 million sepsis cases and 11 million sepsis-related deaths worldwide in 2017, reported in research published in 2020. These figures describe the scale of the problem; they are not a new count for 2026 or a prediction of what will happen to an individual patient.

Sepsis can arise from many infections. A foot wound is one possible source, particularly when infection spreads or a person's ability to fight infection and heal is impaired.

Why can a small foot wound become serious?

A small break in the skin can allow infection to develop. Diabetes, kidney disease and poor arterial circulation can complicate the situation. A history of smoking also matters because it increases the risk of vascular disease. The appearance of the wound alone does not tell the whole story.

When peripheral arterial disease reduces blood flow, the tissues may not receive enough oxygen and nutrients to support healing. Antibiotics and appropriate dressings may be necessary, but they do not automatically correct a circulation problem. Infection control and assessment of blood supply need to be considered together.

Can a diabetic foot infection be serious without much pain?

Yes. Diabetes can damage the nerves that normally warn us about an injury. A wound or infection may therefore hurt less than expected. Little pain is not reliable reassurance, especially if the foot looks different, the wound is worsening or the person feels unwell.

This is why I encourage patients and families to notice changes rather than wait for severe pain. A new wound, spreading redness, increasing swelling, discharge or a change in skin colour needs attention, even when walking remains possible.

Which warning signs need urgent help?

A foot wound needs prompt medical assessment if it develops pus, worsening redness or swelling, severe pain, black tissue or a rapid change in appearance. In someone with diabetes or known poor circulation, do not wait for a wound to become large before seeking help.

Possible sepsis is an emergency. Warning signs may include:

• New confusion, unusual drowsiness or sudden deterioration.

• Severe shivering, fever, or feeling markedly unwell.

• Breathlessness or unusually rapid breathing.

• Passing very little urine.

• Mottled, pale, blue or otherwise discoloured skin.

Not everyone has every sign. If someone with an infection becomes seriously unwell, seek emergency care immediately; in Singapore, call 995 when emergency ambulance help is needed. Do not wait for a routine clinic appointment.

How does a vascular assessment help?

I assess the wound alongside the person's symptoms, medical history, foot temperature, skin changes and pulses. When indicated, blood-flow tests or vascular ultrasound help establish whether narrowed or blocked arteries are contributing to poor healing. Further imaging depends on the findings and the treatment being considered.

The plan may involve infection treatment, wound care, pressure relief and management of diabetes and other risk factors. Some patients also need a procedure to improve circulation. The right sequence depends on the severity of infection, the blood supply and the person's overall health.

Where can I discuss a foot wound or circulation concern in Singapore?

For a non-emergency vascular assessment, contact Andrew Choong Vascular Surgery at Mount Elizabeth Novena Specialist Centre, #09-22, 38 Irrawaddy Road, Singapore 329563. I can assess whether poor circulation is affecting healing and discuss an appropriate treatment plan.

This article accompanies my video for general patient education. A worsening wound needs an individual assessment, and suspected sepsis requires immediate emergency care.