My Nerve Test Was Normal. Why Do My Feet Still Burn?

NERVE TESTING · BURNING FEET

What a normal nerve test can—and cannot—tell you

“Normal” is a result, not an explanation for every sensation. If your feet still burn after a routine nerve study, the useful next question is what the test examined—and what your symptoms and examination suggest should happen next.

Dr. Shailesh Male, MD

Board-certified neurologist and neurointerventionalist. NeuroClarified explains complex neurological conditions and treatments in clear, clinically grounded language.

Medically reviewed: Sept 21, 2026

Key takeaways

• Routine nerve-conduction studies assess selected nerve pathways, including larger sensory fibers; they do not directly assess the small fibers that carry pain and temperature.
• A normal result neither rules out a small-fiber problem nor proves one. Your history and neurological examination still matter.
• Care may address an identified cause, reduce pain, and protect function. No single test or treatment fits everyone.

Seek emergency help for sudden numbness or tingling with weakness, trouble speaking, a vision change, or difficulty walking. Rapidly worsening weakness over hours or days needs urgent assessment. New numbness around the genitals or bottom, or new bladder or bowel trouble with back or leg symptoms, needs emergency assessment. Do not wait for another outpatient nerve test in these situations.

What “normal” actually answers

If a report says your nerve-conduction study was normal, it is understandable to feel confused—or dismissed—when your feet still burn. The result is meaningful, but it has a boundary. A routine study measures how electrical signals travel through selected nerves. It is useful for certain larger-fiber nerve problems. It does not directly test the tiny pain-and-temperature fibers in the skin.

That creates two equally important cautions. A normal routine result does not rule out a small-fiber problem. But pain with a normal result does not, by itself, prove small-fiber neuropathy. “The test did not measure that pathway directly” is not the same as “we know what the diagnosis is.”

A normal study can be useful information about the pathways it tested. It does not directly assess small pain-and-temperature fibers; it also does not diagnose a disorder in those fibers by exclusion.

How a clinician puts the pieces together

The visit starts with a pattern, not an isolated number on a report. When did the burning begin? Does it affect both feet in a similar way, or only one area? Is there numbness, unusual sensitivity to a sheet, weakness, balance difficulty, or a change in walking? What medicines, supplements, medical conditions, and exposures might matter? The examination helps separate sensory changes from weakness and other findings.

Depending on that picture, blood work might assess glucose-related problems or low B12, among other possible causes. Excessive B6 from supplements can also be harmful, so bring the actual labels and amounts rather than guessing. A clinician may consider other testing when the findings support it. In selected people with suspected small-fiber neuropathy, assessment can include a skin biopsy to measure nerve-fiber density or quantitative sensory testing. Neither is an automatic next step or a standalone answer for every patient; availability and interpretation vary.

Can anything help if the cause remains uncertain?

Yes, care has more than one goal. First, look for and address a treatable contributor when possible—for example, confirmed B12 deficiency or a medicine that might be involved. Do not change a prescribed medicine without your clinician. Second, treat the pain itself when appropriate; medicines used for nerve pain are chosen around other health conditions, possible side effects, and how much the symptom disrupts sleep and daily life. Third, support function: if balance or weakness is a problem, rehabilitation or walking support may help.

Finding a cause does not guarantee every symptom will disappear, and an uncertain cause does not mean the pain cannot be treated. Some people improve; others need ongoing management. The plan should fit the person, the examination, and what the testing actually showed—not a promise inferred from one “normal” report.

Three questions to bring to the appointment

1. Which nerves and kinds of function did my study assess, and what did the result make less likely?
2. Do my symptoms and examination suggest a cause worth testing for or a different type of nerve problem?
3. What can we do now for pain, sleep, balance, or daily function while we investigate?

For persistent unexplained burning, arrange an evaluation. If your foot is numb, have a sore or wound checked even if it is not painful. A useful result is one that guides the next decision—not one that ends the conversation prematurely.

Sources and further reading

• American Academy of Neurology: laboratory evaluation of distal symmetric polyneuropathy
• Devigili and colleagues, Brain (2019): small-fiber neuropathy diagnostic criteria
• National Institute of Neurological Disorders and Stroke: Peripheral Neuropathy
• NIH Office of Dietary Supplements: Vitamin B6
• NICE guideline CG173: neuropathic pain in adults

The figure is an AI-assisted conceptual illustration, not a patient result. This article offers general education, not an individual diagnosis or treatment plan. Do not start, stop, or change medicines or supplements on the basis of this page. A qualified clinician can interpret your symptoms and testing in context.