Burning sensations in the feet and hands almost always trace back to nerve damage or irritation, a broad category called peripheral neuropathy. The nerves farthest from the spinal cord, those in the toes and fingertips, are the most vulnerable, which is why burning tends to show up there first. The causes range from common conditions like diabetes and vitamin deficiencies to rarer disorders, and identifying the right one is the key to getting relief.
Diabetes Is the Most Common Cause
High blood sugar is the single biggest reason people develop burning feet and hands. Nearly half of all people with diabetes will develop peripheral neuropathy at some point, and 10 to 15 percent of people newly diagnosed with type 2 diabetes already have measurable nerve damage. The longer blood sugar stays elevated, the worse it gets: after ten years of diabetes, the prevalence exceeds 50 percent.
The damage happens through several overlapping mechanisms. Chronically elevated glucose triggers inflammation and oxidative stress in the tiny blood vessels that feed your nerves. Those vessels narrow, reducing oxygen delivery to nerve tissue. Starved of oxygen, the nerve fibers begin to malfunction and eventually die, starting with the longest ones (the ones running to your feet). About 20 percent of people with diabetic neuropathy go on to develop actual neuropathic pain, the burning, stabbing, or electric-shock sensations that can interfere with sleep and daily life.
Vitamin B12 and Other Nutritional Gaps
Your nerves are insulated by a protective coating called the myelin sheath, and B12 is essential for building and maintaining it. When B12 drops too low, the body produces abnormal fatty acids that destabilize myelin, leading to demyelination. The result is a sensory neuropathy where signals misfire, creating burning, tingling, or numbness in the hands and feet. Levels below roughly 200 pg/mL are associated with neuropathy risk, and a large review of 32 studies found that low B12 increased the odds of neuropathy by about 50 percent.
Other B vitamins matter too. Thiamine (B1) and B6 both play roles in the biochemical pathways that maintain nerve health. Deficiencies in these vitamins are especially common in people who eat a restricted diet, have had weight-loss surgery, or take certain medications like metformin or proton pump inhibitors for extended periods. The good news is that if caught early enough, correcting the deficiency can halt or even reverse the nerve damage.
Alcohol’s Double Hit on Nerves
Heavy, long-term alcohol use damages peripheral nerves in two ways at once. Ethanol itself appears to be directly toxic to nerve fibers. At the same time, chronic drinking impairs the body’s ability to absorb and store thiamine, B6, B12, and folate, the same vitamins nerves depend on. This combination of direct poisoning and nutritional depletion makes alcoholic neuropathy particularly stubborn. Burning and tingling in the feet are often the earliest symptoms, sometimes appearing years before more serious complications develop.
Kidney Disease and Toxin Buildup
When the kidneys lose their filtering capacity, waste products accumulate in the blood and eventually damage nerves throughout the body. This condition, called uremic neuropathy, affects roughly 90 percent of people on dialysis. For years, researchers tried to pin the damage on specific toxins like urea, creatinine, or uric acid, but none showed a clear causal link. More recent work points to elevated potassium as a central player: studies have shown that high potassium levels impair nerve function in a dose-dependent way, and bringing potassium back to normal can restore nerve signaling. The neuropathy affects both sensory and motor nerves in the arms and legs, producing burning, numbness, and eventually weakness.
Thyroid Problems and Nerve Compression
An underactive thyroid can cause burning in the hands through a surprisingly mechanical process. In hypothyroidism, the body deposits mucus-like substances in soft tissues, causing swelling. Inside the carpal tunnel, a narrow passageway in the wrist, this swelling compresses the median nerve. The result is carpal tunnel syndrome: burning, tingling, and numbness in the thumb, index, and middle fingers. The synovial membrane around the tendons in the carpal tunnel can also swell, adding further pressure. Treating the underlying thyroid condition often relieves the nerve compression over time.
Autoimmune Attacks on Nerves
In Guillain-Barré syndrome, the immune system turns on the body’s own peripheral nerves after mistaking them for an infection it recently fought. The disorder typically appears days or weeks after a respiratory or gastrointestinal infection. The immune system’s antibodies, primed to fight bacteria or viruses, recognize similar-looking structures on nerve cells and attack them instead. In the most common form, the immune system strips the myelin sheath from nerves. In other variants, it damages the nerve fibers directly.
The first symptoms are often unexplained tingling or burning in the feet and hands, followed by weakness that moves upward through the legs and arms. This progression happens fast. Most people reach their peak weakness within two weeks, and by three weeks, 90 percent are at their weakest point. The burning and tingling sensations tend to appear first and then give way to the more prominent weakness, which is what typically drives people to seek emergency care.
Chemotherapy-Related Nerve Damage
Certain cancer treatments are well known for causing burning, tingling, and numbness in the hands and feet. Platinum-based drugs (cisplatin, carboplatin, oxaliplatin), taxanes, vinca alkaloids, thalidomide, and bortezomib all carry a high risk of chemotherapy-induced peripheral neuropathy. Platinum compounds in particular cause damage to the sensory nerve cell bodies themselves, not just the fibers, which is why the damage can sometimes persist long after treatment ends. If you’re undergoing chemotherapy and notice new burning in your extremities, your oncologist may adjust the regimen to limit further nerve injury.
Erythromelalgia: A Vascular Cause
Erythromelalgia is rare, but it’s worth knowing about because its hallmark is intense burning in the feet and hands accompanied by visible redness and warmth. Unlike neuropathy, where the nerves themselves are damaged, erythromelalgia involves abnormal blood flow to the extremities. Episodes are triggered by heat, exercise, standing for long periods, or wearing tight shoes, and they can last anywhere from minutes to days. Cooling the affected area with fans or ice packs and elevating the limbs typically provides relief. The diagnosis is clinical, based on that characteristic triad of redness, warmth, and burning pain that flares with heat and eases with cooling.
Fabry Disease and Childhood Onset
Fabry disease is an inherited condition caused by a deficiency of a specific enzyme that breaks down certain fats. Without enough of this enzyme, fatty substances accumulate in cells throughout the body, including nerve cells. The disease is X-linked, meaning it primarily affects males, though female carriers can also experience symptoms. One of its earliest signs is constant burning pain in the toes and fingers, often appearing in childhood or adolescence. Affected males typically develop pain and reduced sweating by their teens. Painful crises with extremely severe sharp pain can occur on top of the baseline burning. Without treatment, the disease progresses to affect the kidneys, heart, and brain by the fourth or fifth decade of life.
How Burning Nerve Pain Is Diagnosed
Standard nerve conduction studies can detect damage to large nerve fibers, but many people with burning feet and hands have small fiber neuropathy, where only the tiniest nerve endings are affected. In these cases, nerve conduction tests come back normal despite significant symptoms. The definitive test is a skin punch biopsy, usually taken from the lower leg, where a pathologist counts the number of nerve fibers penetrating the outer layer of skin. In healthy people, the density at the lower leg is typically well above the neuropathic range, while people with small fiber neuropathy show reduced counts, often around 5 fibers per millimeter or fewer at the distal leg. This biopsy is currently the only objective way to confirm small fiber neuropathy.
Blood work is also essential. Testing for blood sugar and hemoglobin A1c, B12 levels, thyroid function, kidney function, and markers of inflammation can identify or rule out the most common underlying causes.
Treatment Options for Burning Nerve Pain
Treating the underlying cause is always the priority. Controlling blood sugar slows or stops diabetic neuropathy progression. Replacing a missing vitamin can reverse early deficiency-related damage. Correcting thyroid levels can relieve nerve compression. But when the burning persists despite treating the root cause, or when the cause can’t be fully corrected, medications targeting nerve pain itself become important.
First-line treatments fall into two main categories: anticonvulsants that calm overactive nerve signaling (gabapentin and pregabalin) and antidepressants that work on pain pathways in the spinal cord (duloxetine and older tricyclic antidepressants). These medications don’t eliminate pain entirely for most people, but they can reduce it enough to improve sleep and function. Side effects for all of them are dose-dependent and reversible, with drowsiness being the most common complaint for anticonvulsants and nausea for duloxetine. Topical treatments applied directly to the skin, such as capsaicin cream or lidocaine patches, can help when the burning is localized to a specific area and the idea of systemic medication isn’t appealing.