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.

Why Do Some Foot and Leg Wounds Not Heal?

A foot or leg wound that is not healing may need more than a change of dressing. Wound healing depends on several things working together, including an adequate blood supply, controlled swelling, protection from pressure and appropriate management of infection and underlying health conditions.

In this video, I focus on two questions from a vascular perspective: is enough blood reaching the wound through the arteries, and are the veins draining effectively? These questions can help explain why a wound remains open despite regular care.

When is a wound considered chronic?

In the video, I describe a wound that persists beyond about four weeks as chronic. Definitions vary, and the important point is that a wound which is not progressing needs its underlying cause reviewed.

Four weeks is not a waiting period before seeking help. A new foot wound in someone with diabetes, a worsening wound or signs of infection deserves earlier assessment. Reduced sensation can make a significant wound surprisingly painless.

How can blocked arteries delay healing?

Arteries bring blood carrying oxygen and nutrients to the tissues. If they are narrowed or blocked, the wound may not receive enough blood to repair itself effectively. This is one reason peripheral arterial disease (PAD) matters in foot and leg wound care.

Some people also notice pain when walking, pain at rest or a foot that feels unusually cold. Others have fewer obvious symptoms, particularly if diabetes has affected their nerves. The wound’s appearance alone cannot establish whether the blood supply is adequate.

How can vein problems affect a wound?

Veins return blood from the legs towards the heart. When their one-way valves do not work properly, blood can flow backwards, a problem called venous reflux. Raised venous pressure and swelling can damage the surrounding skin and interfere with healing.

This is a different mechanism from arterial blockage. Someone with venous disease or varicose veins may also have ankle swelling, aching, brownish skin changes or a recurrent ulcer. Arterial and venous problems can occur together, so treatment should follow an assessment rather than an assumption.

What else can prevent a wound from healing?

Circulation is only part of the picture. Factors that may need attention include:

• Diabetes: including glucose control, nerve damage and infection risk.

• Pressure or repeated injury: for example, footwear rubbing the same area.

• Smoking and nutrition: both can affect the body’s ability to repair tissue.

• Medicines and other illnesses: these may influence healing and should be reviewed.

• Infection: which can worsen a wound and become more serious when blood supply is poor.

What does a vascular wound assessment involve?

I would ask how the wound started, how long it has been present and what care it has received. Examination includes the wound, surrounding skin, swelling and foot pulses. Your medical history and medicines help guide further investigation.

Tests may include ankle or toe pressure measurements and duplex ultrasound to assess arterial flow or venous reflux. Further imaging is selected according to the findings. Not every wound requires every test or a procedure.

A treatment plan may combine dressings, pressure relief, management of infection and diabetes, and treatment of a circulation problem where appropriate. Compression can help selected venous ulcers, but its suitability depends on the arterial blood supply. Avoid starting tight bandaging yourself.

Which changes need urgent attention?

Seek urgent medical help for spreading redness, increasing warmth or swelling, pus, worsening pain, fever or black tissue. A suddenly cold, painful, numb or weak foot needs emergency assessment. Do not wait for a routine clinic appointment if the problem is rapidly worsening; call 995 in Singapore for a life-threatening emergency.

Assessment for a non-healing wound in Singapore

For a wound that is slow to heal, contact Andrew Choong Vascular Surgery to discuss assessment at Mount Elizabeth Novena Specialist Centre, #09-22, 38 Irrawaddy Road, Singapore 329563. Understanding the cause helps guide care beyond the dressing itself.

This article provides general education and does not replace an individual medical assessment.

World Diabetes Day 2025: Diabetes, Artery Health and Foot Care

Diabetes can affect the blood vessels long before a person notices a circulation problem. For World Diabetes Day, my video explains why looking after your arteries belongs alongside managing blood glucose. The aim is to recognise risk early, identify problems that need treatment and protect long-term health.

A circulation assessment is most useful when it answers a clear clinical question. It should be guided by symptoms, examination and individual risk, with a plan for what the findings will change.

How can diabetes damage the arteries?

Persistently high blood glucose can damage blood vessels and contribute to atherosclerosis, the build-up of plaque within artery walls. Blood pressure, cholesterol, smoking and other factors also influence risk. As arteries become narrowed, less blood may reach the tissues they supply.

The consequences depend on the location. Arterial disease can contribute to heart attacks, strokes and reduced blood flow to the legs and feet. In the legs, this is known as peripheral arterial disease, or PAD.

Diabetes does not mean that every artery is blocked. It means that vascular risk deserves active attention, even when someone feels well.

Why are the feet especially important?

Two problems can occur together: reduced circulation and nerve damage. Poor circulation can make wounds harder to heal. Nerve damage can reduce sensation, so a blister, pressure injury or small cut may go unnoticed.

This is why pain alone is an unreliable warning system. A foot can need attention even if it does not hurt. Look over both feet regularly, including the soles and between the toes, and seek help if you cannot examine them yourself. Appropriately fitting footwear and regular foot reviews are also important.

A diabetic foot ulcer is a serious complication, but it is not a prediction that an amputation is inevitable. Prompt assessment, infection treatment when needed, pressure relief and attention to circulation can all form part of a coordinated care plan.

What can an ABPI or arterial duplex ultrasound show?

An ankle–brachial pressure index, also called ABPI or ABI, compares blood pressure at the ankle with blood pressure in the arm. It helps assess whether arterial narrowing may be reducing blood flow to the legs.

Diabetes can make arteries stiff and difficult to compress. This can produce a normal-looking or high ankle pressure despite underlying disease. A normal ABPI therefore does not rule out PAD by itself in someone with diabetes.

Arterial duplex ultrasound uses sound waves to examine arteries and blood flow. Depending on the findings, other measurements, such as toe pressures, may also be helpful. These tests assess particular aspects of circulation; they do not provide a single all-clear for every artery in the body.

Does everyone with diabetes need the same vascular tests?

No. The assessment should start with the history and examination, including symptoms, foot condition, pulses and previous ulcers or vascular disease. Your clinician can then decide which tests are appropriate and whether a specialist review is needed.

Tell your care team about calf discomfort when walking, a change in walking distance, persistent foot pain, colour changes or a wound that is slow to heal. An absence of typical walking pain does not exclude a circulation problem.

When should a foot problem be checked urgently?

A new ulcer, spreading redness, discharge or a hot, swollen foot needs prompt medical assessment. Seek emergency care for a suddenly cold, pale or numb foot, severe new pain, blackened tissue or a foot infection accompanied by fever or feeling seriously unwell. Do not wait for a routine appointment if the foot is deteriorating.

What helps protect vascular health over time?

Work with your usual care team on blood glucose, blood pressure and cholesterol, take prescribed treatment consistently and seek support to stop smoking if needed. Combine these measures with foot care and physical activity suited to your condition.

For concerns about diabetes and leg circulation, contact Andrew Choong Vascular Surgery at Mount Elizabeth Novena Specialist Centre, #09-22, 38 Irrawaddy Road, Singapore 329563. An individual assessment can help clarify the next step.