Both cause leg symptoms. Both are called “circulation problems”. They are close to opposites, and the single most consequential difference is that the standard treatment for one can be harmful in the other.
Why this matters in practice
Compression is a mainstay of venous treatment. In a leg where the arterial supply is poor, compression can reduce blood flow further. This is the reason this site keeps saying that the arterial check comes before the socks — it is not caution for its own sake. Compression safety →
The mechanisms, in one sentence each
PAD is narrowed arteries: not enough blood getting into the leg.
Chronic venous insufficiency is leaky vein valves: blood not getting out of the leg efficiently, so pressure builds.
Telling them apart
| PAD (arterial) | Venous insufficiency | |
|---|---|---|
| Pain pattern | Cramping in calf, thigh or buttock that starts after a predictable walking distance and stops within minutes of resting | Aching, heaviness and tiredness that builds through the day, worst after prolonged standing |
| Effect of walking | Brings the pain on | Usually relieves it — the calf pump is working |
| Effect of elevation | Can make pain worse; people dangle the foot | Relieves symptoms |
| Time of day | Related to activity, not the clock | Worse in the evening, better in the morning |
| Swelling | Not typical | Typical — soft, around the ankle, better overnight |
| Skin color | Pale on elevation, dusky red when dependent | Brown or rust staining above the ankle |
| Skin texture | Thin, shiny, hairless; thickened slow nails | Dry, itchy, eczema-like; later firm and woody |
| Temperature | Foot often cool | Usually normal or warm |
| Pulses | Reduced or absent | Usually normal |
| Ulcer location | Toes, heel, bony pressure points | Inner ankle (“gaiter” area) |
| Ulcer appearance | Punched out, dry, pale base, often very painful | Shallow, irregular, wet, moderate pain |
| Key test | Ankle-brachial index | Venous duplex ultrasound |
| Compression | Potentially harmful — assess first | Central to treatment |
The overlaps that catch people out
- You can have both. Mixed arterial and venous disease is common, particularly in older patients and in diabetes. It is managed differently from either alone, with compression either modified or withheld depending on the arterial numbers.
- Nerve damage masks the arterial story. In diabetes, reduced sensation can remove the pain that would otherwise signal claudication or an ulcer. A foot can be badly ischemic and not hurt.
- Both cause ulcers, and an ulcer does not announce its type. Location and appearance help, but they are not definitive, which is why a leg ulcer gets an arterial assessment as standard before compression bandaging.
- “My legs ache when I walk” is ambiguous. So is “my legs ache at the end of the day”. The reproducible distance-then-relief pattern is what points to arterial disease; the build-through-the-day pattern points to venous.
The one question worth asking yourself
Does putting your legs up make it better or worse? Better points venous. Worse — particularly foot pain at night that eases when you hang the foot down — points arterial, and that is a symptom to be seen about promptly rather than to note with interest.
What happens at the appointment
- History: the pattern, the timing, the effect of elevation, and what else you have.
- Examination: pulses, skin, temperature, swelling, both legs compared.
- An ABI, and a toe pressure if you have diabetes or kidney disease.
- Venous duplex ultrasound if reflux or a clot is in question.
- A plan that reflects which system — or both — is involved.
Common questions
Can I have both PAD and venous insufficiency?
Yes, and it is not rare. Mixed disease changes the plan substantially — compression may be reduced, modified or avoided entirely depending on the arterial pressures, and the arterial problem is usually addressed first because healing depends on blood supply.
Is PVD the same as PAD?
Peripheral vascular disease is the broader umbrella and technically includes venous disease; peripheral artery disease specifically means the arteries. In everyday use the two are often swapped, so it is worth asking which one is meant when you see it on a letter.
My ulcer is on my inner ankle. Does that mean it is venous?
It points that way, and most ulcers in that area are venous — but location alone does not settle it, and the consequence of getting it wrong is significant, because venous ulcers are treated with compression. That is why an arterial assessment is standard before compression bandaging, whatever the ulcer looks like.
Which is more serious?
Different kinds of serious. PAD carries a substantially raised risk of heart attack and stroke and, when advanced, can threaten the limb. Venous disease rarely threatens life but causes long-term skin damage, ulcers and considerable day-to-day misery. Neither is a reason to relax about the other.
Where to go next
Sources
- National Heart, Lung, and Blood Institute. PAD — Symptoms.
- Society for Vascular Surgery. Chronic Venous Insufficiency.
- NHS. Leg ulcer — diagnosis.
- American College of Cardiology. 2024 Lower Extremity PAD Guideline.
Written by Tom Biernacki, DPM, FACFAS. Published 20 September 2026. General education, not medical advice.