Poor circulation in your feet: recognising the symptoms

Poor circulation in your feet rarely gives cold alone. Other signals usually join in: calf pain while walking that eases when you stand still, pale or bluish skin, slow wound healing and sometimes less hair growth on your lower legs. That combination is the real marker.

I find that distinction the most useful part of this whole subject. Cold feet alone say little. Cold feet plus pain when walking is a different story.

How do you recognise poor circulation?

The characteristic signal is intermittent claudication: pain or cramp in your calf after a set walking distance, which disappears within a few minutes of standing still and returns when you start again. That pattern stands out because it's reproducible. Same distance, same pain, same relief.

The Dutch name translates as shop window legs, from stopping at a window to let the pain settle. It sounds light hearted, but it's one of the clearest pointers there is.

The symptoms listed

Not everyone has all of them, and the order varies. These are the signals that belong to reduced arterial circulation.

• Cold feet or lower legs, often clearer on one side
• Pain or cramp in your calf when walking, gone at rest
• Pale skin when you raise the leg, red when you let it hang
• Small wounds on foot or toe that heal slowly or not at all
• Less hair growth on your lower leg, shiny or thin skin
• A weak or absent pulse on the top of your foot

The Dutch Heart Foundation counts pain when walking that disappears on standing still among the complaints worth having assessed. That's fair, because it's the symptom with the most predictive value.

The difference from cold that simply suits you

With a harmless cause both feet are roughly equal, they warm up indoors, and there's no pain on exertion. With a vascular problem there's more often a clear difference between left and right, and walking makes things worse rather than better.

That last part is counterintuitive. For muscle soreness or stiffness, moving usually helps. With a narrowed artery, moving makes it worse, because the muscle demands more oxygen than can get through.

Which risk factors play a part

Smoking, diabetes, high blood pressure, an unfavourable cholesterol profile and age all raise the risk. A 2015 review in Circulation Research describes peripheral arterial disease as common worldwide and often unnoticed for a long time. That quiet character is exactly what makes the risk factors matter.

Smoking stands out. Nicotine narrows the vessels acutely and damages the vessel wall over time.

What blood tests do and don't do here

A blood test doesn't measure narrowing. What it can do is sketch your risk profile: cholesterol, glucose and HbA1c say something about the factors that load the vessel wall. The narrowing itself is assessed by a doctor, for instance by comparing the blood pressure at your ankle with the one at your arm.

What you can check yourself before measuring anything

Three observations make the conversation with your GP a good deal more concrete. They establish nothing, but they separate the pattern that belongs to your build from the pattern that belongs to your vessels. Write them down for a week if it helps.

Compare left and right. Put your hands on the top of both feet and feel whether one is clearly colder than the other. A consistent difference between two feet is more informative than two feet that are both cold.

Measure your distance. If you get pain when walking, count how many metres you manage before it starts. If that's roughly the same number every time, that's precisely the reproducible pattern a doctor asks about.

Look at your skin and hair growth. A shiny, thin lower leg with less hair than before is a slow signal that people rarely notice in themselves.

An example of how it comes together. You're 58, you smoke, and you notice that while doing the shopping you have to pause at roughly the same corner every time. That isn't fitness slipping, that's a pattern with a name.

Picture two men of 58 with exactly the same walking complaint. One has an LDL of 2.1 mmol/l and an HbA1c of 34 mmol/mol, the other an LDL of 4.6 and an HbA1c of 52.

Those numbers don't explain the narrowing, and they don't measure it either. They only show which factors are pulling at it, and that happens to be the part you can do something about.

How a doctor assesses it

The first step is usually simple: feeling for the pulse on the top of your foot and in your groin, and comparing the blood pressure at your ankle with the one at your arm. That ratio is called the ankle brachial index. Further investigation only follows if there's reason for it.

What I like about this is that the examination is simple and undemanding. You don't have to swallow anything and no needle is involved.

When do you call a doctor?

Get in touch for calf pain when walking, for a wound on your foot that won't heal, or for a foot that suddenly turns cold, white or blue and hurts. That last one is acute and shouldn't wait.

More on how that narrowing develops is in narrowed blood vessels. The broader list of causes of cold is in cold hands and feet: 8 causes.

Sources

• Epidemiology of peripheral artery disease. Circulation Research, 2015. PMID 25908725
• Raynaud's phenomenon. Journal of Scleroderma and Related Disorders, 2019. PMID 35382391
• Hypothyroidism. The Lancet, 2024. PMID 39368843

Every blood test result includes a professional assessment from a BIG-registered doctor. For treatment decisions, discuss your results with your GP.