Symptoms and causes
Peripheral neuropathy symptoms
Nerve damage does not produce one symptom. It produces a set — and which set you have, in what order, on which parts of the body, narrows the cause faster than any single sensation does.
Written by the Managing Neuropathy editorial team under the direction of Dr. Tom Biernacki, DPM, FACFAS · Clinical review pending · Last updated 7 September 2026
The short answer. Peripheral neuropathy can affect three kinds of nerve: sensory nerves, which carry what you feel; motor nerves, which carry what you can move; and autonomic nerves, which run the things you never think about. Most people notice sensory symptoms first — tingling, burning, numbness, usually in both feet, starting at the toes. The symptoms that matter most clinically are the ones people do not bother reporting: painless numbness, a quiet change in balance, and skin on the feet that has stopped sweating.
Three nerve systems, three symptom lists
A peripheral nerve is not one wire. It is a bundle carrying different fiber types with different jobs, and disease does not always damage them evenly. That is why two people with the same diagnosis can describe completely different experiences, and why the question a clinician is really asking is not how bad is it but which fibers are involved.
| Nerve type | What it does | What it feels like when damaged |
|---|---|---|
| Sensory | Touch, temperature, pain, vibration, position sense | Tingling, burning, numbness, unsteadiness in the dark |
| Motor | Muscle power and control | Weakness, tripping, cramps, visible wasting |
| Autonomic | Sweating, blood pressure, digestion, heart rate | Dry cracked feet, dizziness on standing, bloating |
Sensory symptoms
These are the ones that bring people in, and they divide neatly along fiber size.
Small-fiber symptoms
Small fibers carry pain and temperature. When they are damaged the symptoms are loud and often worse at rest:
- Burning, often described as standing on hot sand, and typically worse in the evening. Why it peaks at night has a specific explanation.
- Tingling and pins and needles that arrive without the foot having gone to sleep. More on tingling.
- Electric, stabbing or shooting pains lasting seconds.
- Allodynia — pain from something that should not hurt at all, classically a bedsheet resting on the toes.
- Temperature confusion: feet that feel cold to you and warm to the touch, or the reverse.
Small-fiber damage is the reason a nerve conduction study can come back completely normal while the symptoms are severe — that test only measures the large fibers. That mismatch is worth understanding before you accept a normal result.
Large-fiber symptoms
Large fibers carry vibration, light touch and position sense. Their failure is quieter and, in the feet, more dangerous:
- Numbness — a dead, padded, walking-on-carpet feeling. Numbness is the symptom to take most seriously.
- Loss of position sense, which shows up as balance that collapses in the dark or in the shower with eyes closed.
- Unsteadiness and falls, often blamed on age rather than nerves.
- Reduced vibration sense, usually the first thing an examination picks up, often before the person notices anything.
Motor symptoms, which people rarely think to mention
Motor involvement usually arrives later in a length-dependent neuropathy, and it is under-reported because it does not hurt.
- Toes that catch on carpet or on kerbs, or a foot that slaps the floor. Taken far enough this becomes foot drop.
- Claw or hammer toes developing in adulthood. When the small muscles inside the foot weaken, the long tendons win, and the toe buckles. New deformity in an adult foot is a motor sign, not a shoe problem.
- A higher arch than the foot used to have, for the same reason.
- Night cramps and muscle twitching.
- Visible thinning between the long bones on top of the foot, or in the calf.
The toe-shape point is the one worth repeating, because it changes where pressure lands. A clawed toe puts the whole load on a small area of skin that has already lost its warning system — which is precisely how ulcers begin.
Autonomic symptoms, which nobody connects to their feet
Autonomic fibers are small, so they often fail alongside the burning-and-tingling group. Almost nobody volunteers these to a foot specialist:
- Feet that no longer sweat, leaving skin dry, shiny and prone to deep heel fissures. This is a nerve sign, not a moisturizer problem.
- Dizziness or greying vision on standing up — a drop in blood pressure the nerves have stopped correcting.
- Early fullness after small meals, bloating, unpredictable bowels.
- A heart rate that stays flat when it should rise, or a resting rate that never varies.
- Bladder emptying that is incomplete, or new erectile difficulty.
- Loss of the warning signs of low blood sugar, which is a serious problem in anyone on insulin.
Autonomic neuropathy has its own page, because the cardiovascular part of it carries real risk and is routinely missed.
The pattern matters more than the sensation
Clinically, where symptoms are beats what they feel like. Three questions do most of the work.
Symmetric, both sides, worst at the toes points to a length-dependent polyneuropathy — the metabolic and toxic causes. One foot only points to a compressed nerve, a spinal root, or circulation.
Longest nerves fail first, so toes, then feet, then ankles. When it reaches roughly mid-calf, the fingertips often start — the famous stocking-and-glove pattern.
Years is typical. Days to weeks is not, and rapid onset with weakness is an urgent problem, not a chronic one.
A patchy distribution that skips around the body, or a band of symptoms in one nerve territory, argues against the common metabolic picture and for something else entirely. Back-related nerve pain is the most common impostor.
The order symptoms usually arrive
In the ordinary length-dependent case the sequence is fairly predictable, which is useful because it tells you where you are:
- Vibration sense fades at the toes — detectable on examination, invisible to you.
- Tingling or burning at the toes, intermittent at first, worse at night.
- Numbness fills in behind the tingling and spreads up the foot.
- Balance quietly deteriorates, especially in the dark.
- Small muscles of the foot weaken; toe shape changes; pressure redistributes.
- Protective sensation is lost, and injuries stop announcing themselves.
Step six is the one that turns a nuisance into a risk. What actually drives progression is a separate question from what makes tonight louder.
Symptoms that should be seen quickly
Do not wait for a routine appointment for any of these. Weakness that is getting worse over days rather than years. Symptoms climbing up both legs quickly. Any new numbness around the groin or buttocks, or a change in bladder or bowel control. A foot that has become red, hot, swollen or misshapen, particularly in someone with diabetes and numb feet — that combination needs same-day assessment. Any break in the skin of a foot that has lost sensation, however small, and any wound that is not visibly better within a week.
How to describe symptoms so the appointment is worth having
Most consultations are lost in the first two minutes on vague description. Bring four specifics: where it started and where the edge of it is now; both sides or one; what time of day it is worst; and whether anything has become physically harder — stairs, kerbs, standing with your eyes shut. Then add the negatives that people forget: alcohol intake, every supplement you take including high-dose B6, whether you are on metformin, and any chemotherapy however long ago. A printable list of questions is here.
Common questions
Can you have peripheral neuropathy with no symptoms at all?
Yes, and it is common. Reduced vibration and a missing ankle reflex are frequently found on examination in people who report nothing. That is the argument for screening feet in anyone with diabetes rather than waiting for a complaint.
Do symptoms mean the nerves are still dying?
Not reliably. Pain often reflects irritated, partly damaged fibers. Some people find the burning fades as numbness advances, which feels like improvement and is not. Symptom intensity is a poor gauge of nerve loss.
Why are my symptoms worse at night?
Fewer distractions, warmer skin under bedding, and small-fiber nerves that fire more readily when the foot is warm. It is not evidence that the condition is deteriorating.
My hands are involved too. What does that mean?
Usually that the process has progressed far enough up the legs for the next-longest nerves to be affected. If hands were affected first, or the pattern is asymmetric, the cause is more likely to be something other than a length-dependent polyneuropathy, and that changes the workup.
Can symptoms come and go?
Day-to-day fluctuation is normal and is the reason so many treatments seem to work briefly. Complete resolution for weeks and then a return is unusual and worth mentioning.
Related reading
Neuropathy in the feet, in full · The types of neuropathy · Numb toes and what the pattern means · Tingling in the feet · Burning feet at night · Autonomic neuropathy · What treatment actually does
Sources and further reading: American Academy of Neurology guidance on the evaluation of distal symmetric polyneuropathy. American Diabetes Association Standards of Care, diabetic neuropathy and foot care sections. National Institute of Neurological Disorders and Stroke, peripheral neuropathy information. Published consensus on small-fiber neuropathy diagnosis, including skin biopsy and quantitative sensory testing.
This page is general education and is not a diagnosis or a treatment plan. Clinical review by Dr. Biernacki is pending; the review date will be shown here once complete.
For our Michigan neighbors
A symptom list is not
the same as an examination.
Vibration, monofilament testing, reflexes and pulses take a few minutes and answer questions a symptom list cannot. Dr. Biernacki’s Michigan practice does that testing.
Everywhere else, take this page to your own clinician.
Dr. Tom Biernacki, DPM, FACFAS is a double board-certified foot and ankle surgeon (ABFAS and ABPM) and a Fellow of the American College of Foot & Ankle Surgeons. He is the founder of Balance Foot & Ankle in Howell and Bloomfield Township, Michigan, where peripheral neuropathy, diabetic foot risk and loss of protective sensation are part of his weekly clinic. His patient education videos have drawn more than 950,000 subscribers on YouTube. He writes Managing Neuropathy to put the explanation he gives in the exam room in front of the people who cannot get to one — including when a product is worth buying and when it is not.