A burning sensation across your body usually signals that nerves are sending pain messages they shouldn’t be. The fix depends entirely on the cause, which can range from a simple vitamin deficiency to nerve damage from diabetes. Some causes resolve on their own or with minor changes, while others need medical treatment to prevent the burning from getting worse. Here’s what’s likely behind it and what actually helps.
Why Your Body Feels Like It’s Burning
Burning sensations come from your small nerve fibers, the same ones responsible for detecting temperature and pain. When these fibers are damaged or irritated, they can fire off signals even when nothing harmful is touching your skin. The abnormal signals don’t just come from the injured nerves themselves. Healthy nerves in the same area can also become hypersensitive and start amplifying pain, a process called central sensitization. This is why burning can feel widespread and hard to pin down.
Common Medical Causes
Peripheral neuropathy is the most frequent cause of a burning sensation that affects large areas of the body, particularly the hands and feet. Diabetes is the single biggest driver: more than half of people with diabetes develop some form of neuropathy. But diabetes is far from the only trigger.
Other conditions that damage small nerve fibers and produce burning include:
- Autoimmune diseases like lupus, rheumatoid arthritis, Sjogren’s syndrome, and Guillain-Barre syndrome
- Infections such as shingles, Lyme disease, hepatitis B and C, and HIV
- Metabolic problems including thyroid disorders and kidney disease
- Toxin exposure from alcohol overuse, certain chemicals, or heavy metals
- Inherited nerve disorders
Fibromyalgia and multiple sclerosis can also produce burning sensations, though they work through different mechanisms than classic peripheral neuropathy. In many cases, no clear cause is ever identified, a frustrating diagnosis called idiopathic small fiber neuropathy.
Vitamin Deficiencies That Cause Burning
Low levels of B vitamins, especially B12 and B6, are an underappreciated cause of nerve-related burning. B12 deficiency directly damages the protective coating around nerves, and it’s common in older adults, vegetarians, and people taking certain medications like acid reflux drugs. A simple blood test can identify it, and supplementation often improves symptoms over weeks to months.
Vitamin B6 is trickier. Too little causes nerve problems, but too much does the same thing. Chronically taking 1 to 6 grams of B6 daily for a year or more can cause severe sensory neuropathy with loss of coordination and burning pain. This is worth knowing if you take multiple supplements, since B6 shows up in many of them. People with borderline deficiencies in either vitamin may go months or even years before symptoms become obvious, so the burning can seem to come out of nowhere.
Immediate Relief at Home
While you work on identifying and treating the underlying cause, several strategies can reduce day-to-day burning.
Cool water compresses applied for about 10 minutes can calm overactive nerve signals. Use cool water, not ice or very cold water, which can make nerve pain worse. Loose, breathable clothing made from natural fibers like cotton reduces friction against sensitized skin. Tight clothing, elastic waistbands, and synthetic fabrics tend to aggravate burning.
Over-the-counter pain relievers like ibuprofen or naproxen can take the edge off mild burning, particularly if inflammation is involved. Keep your skin moisturized as well. Dry, cracked skin increases nerve irritation and lowers the threshold for pain signals. Fragrance-free moisturizers are less likely to sting sensitive areas.
Topical creams containing capsaicin (the compound in hot peppers) are sometimes recommended for localized nerve pain. They work by gradually depleting a chemical your nerves use to transmit pain signals. There’s a catch: they cause a temporary increase in burning for the first week or two before relief kicks in, which many people find hard to tolerate. Lidocaine patches, while widely available, have shown limited ability to reverse the kind of nerve-driven burning most people experience. They may numb surface-level discomfort but don’t address the deeper sensitization happening in the nerve fibers.
How Burning Sensations Are Diagnosed
Standard nerve conduction tests only measure large nerve fibers, so they often come back normal in people with burning pain. The gold standard for diagnosing small fiber neuropathy is a skin biopsy, typically taken from the lower leg. A lab counts the nerve endings in the sample and compares them to expected numbers for your age. Very low nerve fiber density confirms neuropathy.
Different labs use different methods to analyze these biopsies, so results aren’t always directly comparable. Blood work usually accompanies the biopsy to check for diabetes, autoimmune markers, vitamin levels, thyroid function, and signs of infection. This combination of tests identifies the cause in roughly half of cases.
Medical Treatments That Help
When home measures aren’t enough, prescription medications targeting the nervous system are the standard approach. These aren’t traditional painkillers. They work by calming overactive nerve signals rather than blocking pain at the site.
First-line treatments typically include medications originally developed for seizures or depression that happen to quiet nerve pain effectively. These are started at low doses and gradually increased to minimize side effects like drowsiness and dizziness. Most people need several weeks to feel the full benefit, and finding the right medication and dose often takes some trial and error.
For people who don’t respond to initial treatments, the 2025 guidelines from the Neuropathic Pain Special Interest Group recommend keeping opioid-based medications as a last resort, reserved only for worsening pain that hasn’t responded to other options. Botulinum toxin injections have also emerged as a third-line treatment, with a strong safety profile and good evidence behind them, though access can be limited depending on where you live. For older adults or people taking many medications, doctors may adjust the typical treatment order to avoid dangerous drug interactions.
Lifestyle Changes That Reduce Nerve Burning
If diabetes or prediabetes is driving the burning, blood sugar control is the single most effective intervention. Keeping glucose levels stable prevents further nerve damage and, in some cases, allows partial nerve recovery. Even modest improvements in blood sugar can slow the progression of neuropathy significantly.
Alcohol is directly toxic to nerve fibers. Reducing or eliminating alcohol often leads to noticeable improvement in burning symptoms over several months, provided the damage hasn’t become permanent. Regular physical activity improves blood flow to peripheral nerves and may help damaged fibers regenerate. Low-impact options like swimming, cycling, or walking are easiest on sensitized feet and legs.
Stress and poor sleep amplify how your brain processes pain signals. People with chronic burning often notice that their symptoms flare during periods of high stress or sleep deprivation. Addressing these factors won’t cure nerve damage, but it can meaningfully lower the volume on pain perception.
Signs That Need Prompt Attention
Most burning sensations develop gradually and aren’t emergencies, but certain combinations warrant quick medical evaluation. Contact a doctor if burning is accompanied by a rapidly spreading rash, fever, swelling or warmth in the skin, or intense burning during urination. Burning that follows a physical injury, gets worse in response to a medication, or appears alongside symptoms like bloody diarrhea or vomiting also needs prompt assessment.
If you have a chronic condition like diabetes or liver disease and notice new or worsening burning, that’s a signal the underlying condition may not be well controlled. Burning that keeps coming back in the same pattern, even if it temporarily resolves, is worth investigating rather than waiting out.