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.