Burning Feet and Numb Toes: Understanding Peripheral Neuropathy

More than 100 types of peripheral nerve disorder are recognised, and diabetes is the most common cause. Knowing why the nerves are misfiring is the key to protecting them.

By SEVA Healthcare Editorial Team

Published Oct 4, 20263 min read

A clinician examining a patient’s foot — Most neuropathies are length-dependent: the feet, farthest from the brain, are affected first. SEVA Healthcare · Publisher-owned image

This article is general health information written by our editors from the sources listed below. It has not yet been medically reviewed — see our medical review policy. It is not advice for your situation.

In short

3 min read

Tingling that starts in the toes, a burning that is worse at night, sheets that hurt — nerve pain has its own logic. What causes it, how it is assessed, and what helps.

What you need to know

Peripheral nerves carry messages between the brain and spinal cord and the rest of the body; when they are damaged, signals may not be sent, may fire when they should not, or may arrive garbled — producing pain, numbness, weakness or other problems.
More than 100 types of peripheral neuropathy are recognised. Diabetes is the most common cause; others include physical injury, infections, autoimmune disease, kidney or liver disease, some medicines and chemotherapy, toxins, alcohol and vitamin imbalances.
Most neuropathies are length-dependent: symptoms begin in the feet and can spread upward.

More key points (2)

Treating the cause — for diabetes, controlling blood sugar — and protecting feet and balance are central; movement helps circulation, balance and mood.
SEVA Healthcare lists peripheral nerve stimulation, lumbar sympathetic block, stellate ganglion block, intercostal nerve block, ketamine infusion therapy and spinal cord stimulation for nerve and neuropathic pain.

It often begins as a vague tingling in the toes, easy to put down to tight shoes. Over months it becomes burning that is worst at night, numbness that makes the floor feel like it is wrapped in cloth, and a sensitivity so sharp that bedsheets hurt. Nerve pain has a character of its own, and understanding where it comes from is the first step to protecting what is left.

What the peripheral nerves do — and what goes wrong

NINDS describes the peripheral nervous system as a large communications network sending signals between the central nervous system and the rest of the body: sensory messages such as “your feet are cold” travelling in, and instructions to muscles, heart, digestion and other organs travelling out. In peripheral neuropathy that signalling is disrupted in three ways — signals that should be sent are not, signals are sent when they should not be, or the messages are changed. Most neuropathies are “length-dependent”: the nerve endings farthest from the brain, in the feet, are affected first and worst, and in severe cases symptoms spread upward.

The many causes

MedlinePlus notes that peripheral nerve disorders are very common and that more than 100 types exist. Diabetes is the most common cause, and most people with diabetes will develop some nerve problems. Physical injury that stretches, crushes, compresses or cuts a nerve is another — complex regional pain syndrome after an injury and brachial plexus injuries are examples. Other causes include cancers and their treatment, infections such as HIV and Lyme disease, blood-vessel problems, autoimmune diseases, kidney or liver disease, certain medicines, toxic substances such as lead or mercury, alcohol use disorder, smoking and vitamin imbalances. Finding the cause matters because some are treatable or reversible.

How it is assessed

A clinician will ask where the symptoms are and how they feel, and examine sensation, strength and reflexes. Blood tests can look for diabetes, vitamin deficiencies and other causes; nerve conduction studies and other tests may be used to confirm which nerves are involved and how badly.

Protecting the nerves you have

Where a cause is found, treating it comes first — for diabetic neuropathy, good control of blood sugar, blood pressure and cholesterol slows progression. Daily foot checks matter when feeling is reduced, because wounds can go unnoticed; well-fitting shoes and prompt care for anything that is not healing prevent serious problems. Movement helps circulation, balance and mood, and removing trip hazards and using night lights reduces falls when sensation or balance is affected. Sleep and mood affect how nerve pain feels, so tell your clinician if pain is disturbing sleep.

Treatments pain specialists use

When medicines for nerve pain have not helped enough, interventional options exist. SEVA Healthcare lists the following for nerve and neuropathic pain on its official page: peripheral nerve stimulation, lumbar sympathetic block, stellate ganglion block, intercostal nerve block, ketamine infusion therapy and spinal cord stimulation. Nerve stimulation treatments involve a trial first; nerve blocks can be both a test and a treatment. Suitability depends on the cause and on an individual evaluation.

Seek prompt assessment for

Rapidly spreading weakness or numbness, or new numbness after an injury. If you have diabetes, seek care for any foot wound that is not healing.

Questions to discuss with your clinician

What is causing my nerve pain, and are there tests that would change the treatment?
Which medicines are used for nerve pain, and what side effects should I watch for?
If a nerve block or nerve stimulation is suggested, is there a test or trial first?
What should I do to protect my feet, balance and skin?

Our Nerve & Neuropathic Pain page gathers related coverage and links to SEVA Healthcare’s official page.

Frequently asked questions

Why does neuropathy usually start in the feet?

Most neuropathies are "length-dependent," meaning the nerve endings farthest from the brain, in the feet, are affected first and worst. In severe cases, symptoms can spread upward.

What can cause peripheral neuropathy?

Diabetes is the most common cause, but there are more than 100 types of peripheral nerve disorders. Other causes include physical injury to a nerve, cancers and their treatment, infections such as HIV and Lyme disease, autoimmune diseases, kidney or liver disease, certain medicines, toxic substances, alcohol use disorder, smoking and vitamin imbalances. Finding the cause matters because some are treatable or reversible.

How is peripheral neuropathy assessed?

A clinician will ask where the symptoms are and how they feel, and examine sensation, strength and reflexes. Blood tests can look for causes such as diabetes and vitamin deficiencies, and nerve conduction studies may help confirm which nerves are involved and how badly.

What options exist if nerve pain medicines have not helped enough?

Interventional options listed for nerve and neuropathic pain include peripheral nerve stimulation, lumbar sympathetic block, stellate ganglion block, intercostal nerve block, ketamine infusion therapy and spinal cord stimulation. Nerve stimulation treatments involve a trial first, and suitability depends on the cause and an individual evaluation.

Sources

Peripheral Nerve Disorders — MedlinePlus (NIH), 2026-10-16
Peripheral Neuropathy — NINDS (NIH), 2026-10-16
Nerve & Neuropathic Pain — SEVA Healthcare (official service page), 2026-10-16

This article is sponsored content by SEVA Healthcare and is for general information only — it is not medical or legal advice. Treatment options depend on an individual evaluation, and results vary from person to person. In an emergency, call 911. Spotted an error? See our corrections policy.