Leg pain when you walk. Ankles that swell by evening. A sore that will not close. Feet that are always cold. This site explains what may be behind each of those, what the evidence supports, and which next step makes sense.
Some symptoms should not wait
A leg that suddenly turns cold, pale or numb. Sudden breathlessness or chest pain. One leg newly swollen when the other is not. A wound with spreading redness and fever. See the care thresholds →
Four places to start
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PAD & Arteries
Narrowed arteries mean less blood reaching the foot. Often silent until it is not.
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Veins & Venous Stasis
Leaky valves raise pressure in the lower leg, producing heaviness, swelling and skin change.
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Swelling & Lymphedema
A symptom with many possible causes. The pattern narrows the list faster than the severity does.
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Everyday Leg & Foot Care
Inspection, skin, footwear, movement — and why compression follows an assessment.
Three systems, three jobs
Start with a question
- Do I have poor circulation in my legs or feet?
- How can I improve circulation in my legs and feet?
- Why are my ankles swollen?
- How do I reduce swelling in my feet and ankles?
- When is leg swelling dangerous?
- Could a medicine be making my ankles swell?
- Could a swollen, painful calf be a blood clot?
- Are my varicose veins dangerous?
- Why do my calves hurt when I walk?
- Why do my legs hurt at night?
- What is venous stasis?
- Is it nerves or circulation?
- Why do my fingers and toes turn white in the cold?
- What is an ABI test?
- Which foods and supplements actually help circulation?
- Is compression appropriate for me?
- What do compression socks actually do?
- Which compression socks should I choose?
- Which shoes fit swollen feet?
Practical guides
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Walking with PAD
What a structured exercise program actually is, and why it is not simply “walk more”.
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Compression safety
Why the arterial check comes before the socks, and what that check involves.
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One swollen leg
Why a difference between the two legs changes the urgency.
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A wound that will not heal
Why a non-healing wound is usually a circulation question first.
About products
Product guides are now published as research-based comparisons: compression socks (with guides for women, men, pregnancy, nurses, wide calves, thigh-high stockings, zipper styles), socks for flying, TED hose, leg compression machines, lymphedema products, leg elevation pillows, shoes for swollen feet (with extra-wide, lymphedema, everyday-brand comparisons), slippers, socks for swollen feet, heated socks and insoles and “circulation boosters”. Each says who a product may suit, who should get advice first, and what we did and did not do, and each leaves room for the conclusion that no purchase is needed. Some link to Amazon, which is disclosed before the first link.
One thing worth repeating: nothing you can buy opens a narrowed artery. All product guides →
Who writes this
Circulation Guide is written by Tom Biernacki, DPM, FACFAS, a double board-certified podiatric surgeon practicing in Howell and Bloomfield Township, Michigan. He is a foot and ankle specialist, not a vascular surgeon, and this site is education rather than medical advice.
Pages carry the date they were published and will carry review details once independent clinical review has actually taken place — not before.
Near Howell or Bloomfield Township?
If you are local to south-east Michigan, a foot and ankle evaluation is one option among several, and referral onward is part of it. The practice is owned by this site’s author, which is disclosed on the page.
Written by Tom Biernacki, DPM, FACFAS. Published 20 September 2026. General education, not medical advice.