Both cause foot pain in diabetes, both are common, and they are frequently present together. Telling them apart matters because one is treated in a pain clinic and the other can cost you a limb.
The single most useful question
Does walking make it better or worse?
- Better with walking, worse at rest and in bed — that is nerve pain.
- Worse with walking, better standing still — that is arterial disease. Predictable: pain comes on after a similar distance each time, eases within minutes of stopping, returns at the same distance.
That contrast is more reliable than any single examination finding, and patients can usually answer it immediately.
The rest of the picture
Pointing to neuropathy: burning, tingling, electric or prickling quality; symmetric and both feet together; starts in the toes and climbs; worse at night; hypersensitivity so that bedding hurts; normal foot color and warmth.
Pointing to arterial disease: cramping or aching rather than burning; often one leg worse; cold, pale or dusky feet; hair loss over the toes and shins; thin shiny skin; nails that thicken and grow slowly; weak or absent pulses; wounds that will not heal.
When to stop reading and get seen urgently
Pain in the forefoot or toes at rest, especially at night, relieved by hanging the foot out of bed — that is rest pain and it signals critical limb ischemia.
A wound, ulcer or blackened area that is not healing.
A foot that is suddenly cold, pale, numb and painful.
Any of those needs same-day vascular assessment, not a pain-clinic appointment. Confusing critical ischemia for neuropathy is how limbs are lost.
Why hanging the foot out of bed is such a specific clue
It is the mirror image of neuropathic behavior. In arterial disease, dependency increases blood flow to the foot, so hanging it down relieves the pain and elevating it worsens it. In neuropathy, position makes little difference and movement is what helps.
A patient who sleeps in a chair to keep the leg down is describing ischemia, and it is worth asking directly rather than waiting to be told.
Both at once is common
Diabetes damages nerves and arteries by overlapping mechanisms, and a large proportion of patients have some of each. That combination is the dangerous one: neuropathy removes the pain that would warn you about an ischemic injury, so the first sign is a wound rather than a symptom.
It is also why every assessment here includes pulses and skin inspection, not just sensation testing. Finding neuropathy does not exclude arterial disease, and assuming it does is a mistake with consequences.
To be assessed, call (314) 310-5577 or text (314) 886-5902. We are at 12174 Natural Bridge Rd, Suite 110, St. Louis, MO 63044.
Common questions
Can I have both?
Yes, and in diabetes it is common. The combination is more dangerous than either alone because the neuropathy hides the warning signs of the ischemia.
Burning Feet at Night goes through it in detail.
My feet are cold and burning. Which is it?
Possibly both, and cold feet warrant checking circulation. Bring it up specifically rather than assuming it is the neuropathy.
There is more on this in Diabetic Neuropathy.
What is an ABI?
An ankle-brachial index — comparing blood pressure at the ankle with the arm. It is quick and non-invasive. Note that in long-standing diabetes calcified vessels can give falsely reassuring readings.
Diabetic Foot Care and Preventing Ulcers goes through it in detail.
Should I see a vascular specialist?
If you have rest pain, a non-healing wound, or claudication at a predictable distance, yes — and promptly.
That is the subject of Peripheral Neuropathy.
Sorting nerve from circulation is one part of the question. If you are also unsteady, see balance and fall-risk assessment.
Sources
- Tehan PE et al. Toe-brachial index and toe systolic blood pressure for the diagnosis of peripheral arterial disease. The Cochrane database of systematic reviews, 2024. PubMed 39474992
- Conte SM et al. Peripheral Arterial Disease. Heart, lung & circulation, 2018. PubMed 29150158
- Mascarenhas JV et al. Peripheral arterial disease. Endocrinology and metabolism clinics of North America, 2014. PubMed 24582096
- McDermott K et al. Etiology, Epidemiology, and Disparities in the Burden of Diabetic Foot Ulcers. Diabetes care, 2023. PubMed 36548709
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