A burning sensation in your feet is most often caused by nerve damage, a condition called peripheral neuropathy. Diabetes is the single most common cause, but vitamin deficiencies, kidney disease, nerve compression, and even poorly fitting shoes can trigger it. The sensation tends to worsen at night and improve somewhat during the day, which is a hallmark pattern that distinguishes nerve-related burning from other foot problems.
How Nerve Damage Creates the Burning
The burning feeling comes from damaged small sensory nerves in the skin of your feet. These tiny nerve fibers are responsible for detecting temperature and pain. When they malfunction, they send false pain signals to your brain, creating a sensation of heat even when nothing hot is touching your skin. Because your feet are the farthest point from your spinal cord, they have the longest nerve fibers in your body, making them the most vulnerable to damage. That’s why burning almost always starts in the feet before it ever reaches the hands.
This type of nerve damage is called small fiber sensory neuropathy. Unlike conditions that affect larger nerves, it doesn’t cause muscle weakness or balance problems. You feel burning, tingling, or pins-and-needles sensations, but your strength stays intact. The symptoms typically start at the toes and progress upward over time.
Diabetes Is the Most Common Cause
Persistently high blood sugar damages nerves through several overlapping mechanisms. Excess glucose triggers inflammation and oxidative stress inside nerve cells, essentially overwhelming their ability to function normally. Over time, this also reduces blood flow to the tiny vessels that supply nerves with oxygen and nutrients. Research published in Frontiers in Endocrinology found that the problem isn’t reduced blood volume in those small vessels but reduced permeability, meaning the vessels become less able to deliver what the nerves need to survive.
If you have diabetes or prediabetes and your feet burn, this is a signal that blood sugar management needs attention. Nerve damage from diabetes can be slowed or stabilized with tighter glucose control, but it generally doesn’t reverse once it’s established.
Vitamin B12 Deficiency
Your nerves need B12 to maintain their protective coating, called myelin. When B12 levels drop too low, that coating deteriorates and nerves start misfiring. The normal B12 range is roughly 200 to 700 pg/mL, and neurological symptoms can appear well before levels reach the bottom of that range. Some people develop burning feet, brain fog, and balance problems with B12 levels that still technically fall within “normal” range on a standard lab test.
B12 deficiency is especially common in people over 50 (who absorb less from food), vegetarians and vegans, and anyone taking long-term acid reflux medications. The good news is that nerve symptoms from B12 deficiency can often improve with supplementation, though recovery is slower the longer the deficiency has lasted.
Kidney Disease and Toxic Buildup
When your kidneys lose function, waste products build up in the bloodstream. These waste products, collectively called uremic toxins, are directly toxic to nerves. Nearly half of people with uremic neuropathy experience numbness and burning in their lower legs and feet. Significant nerve symptoms generally appear when kidney filtration drops below about 20% of normal capacity.
The specific toxins responsible are “middle molecules,” compounds too large to be efficiently removed by standard dialysis. This is one reason why people on dialysis can still experience burning feet despite treatment.
Nerve Compression in the Ankle
Not all burning feet come from systemic disease. Tarsal tunnel syndrome occurs when the tibial nerve gets compressed as it passes through a narrow channel on the inside of your ankle. Think of it as the foot’s version of carpal tunnel syndrome. The compression creates burning, tingling, and numbness on the bottom of your foot or along the inner ankle. This condition is more common in people with flat feet, ankle injuries, or swelling from conditions like arthritis.
The key difference from neuropathy is that tarsal tunnel syndrome usually affects one foot, and the symptoms often have a specific location tied to that compressed nerve rather than a general, stocking-like pattern in both feet.
Erythromelalgia: A Rarer Possibility
If your feet turn visibly red and hot during episodes, and the burning is triggered by warmth or exercise and relieved by cooling, you may have erythromelalgia. This is a vascular condition, not a nerve disorder, and it’s relatively rare. Symptoms tend to flare in the evening and can be absent earlier in the day, which makes it tricky to demonstrate during a morning doctor’s appointment. Specialists sometimes recommend photographing your feet during a flare to bring to your visit.
Why It Gets Worse at Night
If your burning feet keep you awake, you’re experiencing one of the most consistent features of this condition. Several factors converge at night: you’re lying still, so there are fewer competing sensations to distract your brain from the pain signals. Body temperature also follows a natural rhythm that can increase blood flow to the extremities in the evening. And cortisol, your body’s natural anti-inflammatory hormone, drops to its lowest levels at night, reducing its dampening effect on pain pathways.
How Burning Feet Are Diagnosed
Figuring out the cause usually involves blood tests and nerve studies. Blood work checks for diabetes, B12 levels, kidney function, thyroid problems, and markers of inflammation. Nerve conduction studies measure how quickly electrical signals travel through your nerves, while electromyography (EMG) checks whether muscles are responding properly to those signals. Together, these tests help distinguish between large and small fiber problems.
If those tests come back normal but you still have burning, a skin biopsy may be the next step. A tiny punch of skin, usually from the ankle or calf, is examined under a microscope to count the small nerve fibers in the skin. This is currently the most reliable way to confirm small fiber neuropathy, since standard nerve conduction studies only detect damage to larger fibers.
Treatment and Relief
Treatment depends entirely on the underlying cause. If it’s diabetes, tightening blood sugar control is the foundation. If it’s B12 deficiency, supplementation can help. If it’s tarsal tunnel syndrome, reducing the compression through orthotics, physical therapy, or sometimes surgery addresses the root problem.
For the burning sensation itself, medications that calm overactive nerves are the standard approach. In a head-to-head pilot study, gabapentin reduced burning and tingling more effectively than amitriptyline (an older antidepressant also used for nerve pain), with significantly fewer side effects: 31% of gabapentin patients reported side effects compared to 92% on amitriptyline. Topical capsaicin cream, which works by depleting the chemical that nerves use to send pain signals, is FDA-approved specifically for diabetic nerve pain in the feet.
At home, soaking your feet in cool water can provide temporary relief. Avoid ice baths if you have erythromelalgia, as extreme cold can damage the skin. Elevating your feet and wearing breathable, well-fitting shoes also helps reduce irritation. Some people find relief with Epsom salt soaks in warm water, though evidence for this is largely anecdotal. Apple cider vinegar soaks are frequently recommended online but may actually cause skin irritation with no proven benefit for nerve-related burning.
The most important step is identifying what’s driving the nerve damage. Burning feet that persist for more than a few weeks, worsen over time, or start spreading upward toward the ankles are worth investigating, because many of the underlying causes are treatable when caught early.