Burning and itching feet usually come from one of a handful of common causes: a fungal infection, nerve damage, an allergic reaction to your shoes, or poor circulation. Less often, a vitamin deficiency or kidney problem is behind it. The specific combination of your symptoms, where exactly they show up, and what makes them better or worse can help narrow down the cause.
Athlete’s Foot: The Most Common Culprit
If the itching is concentrated between your toes and gets worse right after you take off your socks and shoes, a fungal infection is the most likely explanation. Athlete’s foot is caused by dermatophytes, the same family of fungi behind ringworm and jock itch. These organisms thrive in warm, damp environments like sweaty shoes and locker room floors.
The hallmark signs are scaly, peeling, or cracked skin between the toes, along with itching, burning, and stinging. You may also notice blisters, dry scaly patches on the soles or sides of your feet, or swollen skin that looks red, purple, or gray depending on your skin tone. The fact that it both burns and itches is typical. Over-the-counter antifungal creams usually clear mild cases within a few weeks, but infections that spread to the soles or toenails often need a longer course of treatment.
Nerve Damage From Diabetes or Other Causes
Burning that feels deep, electric, or constant, especially in both feet at once, points toward peripheral neuropathy. This is nerve damage, and diabetes is its leading cause. Persistently high blood sugar triggers a chain of destructive events inside nerve cells: excess glucose gets converted into sorbitol, which disrupts the cell’s internal fluid balance. At the same time, sugar molecules bind to proteins and fats to form highly reactive compounds that damage nerve fibers directly. The result is a breakdown of the protective coating around nerves, particularly the small sensory fibers in the feet.
People with diabetic neuropathy typically describe burning, sharp, or electric pain alongside itching and heightened sensitivity. The symptoms tend to start in the toes and gradually move upward, affecting both feet symmetrically. Numbness may develop alongside the burning, which creates a dangerous combination: you may injure your foot without realizing it.
Diabetes isn’t the only cause of neuropathy. Alcohol overuse, certain medications (particularly some chemotherapy drugs), and autoimmune conditions can damage the same nerve fibers and produce identical burning and itching sensations.
Vitamin B12 Deficiency
Low vitamin B12 can cause the protective myelin coating around nerves to break down, producing tingling, numbness, and burning in the feet. This is sometimes called “burning feet syndrome.” B12 deficiency is more common than many people realize, particularly in vegans, older adults, and people who take long-term acid-reducing medications. A simple blood test can check your levels. Once identified, B12 supplementation often improves symptoms within weeks to months, though recovery depends on how long the deficiency has lasted.
Allergic Reaction to Your Shoes
If your feet itch and burn mostly on the tops, sides, or soles where shoe material presses against skin, contact dermatitis from chemicals in your footwear may be the cause. More than 60% of people who undergo patch testing for foot dermatitis test positive for allergens found in shoes.
The most common offenders are potassium dichromate (used to tan leather), rubber accelerators like mercaptobenzothiazole and thiuram mixtures (used to make shoe soles and insoles), and formaldehyde resins used in adhesives. Nickel in buckles and eyelets is another frequent trigger. The rash typically mirrors the shape of the shoe part touching your skin, which is the key clue. Switching to shoes made with vegetable-tanned leather or non-rubber materials, or wearing barrier socks, can make a significant difference.
Poor Circulation and Venous Insufficiency
When valves in your leg veins stop working properly, blood pools in your lower legs and feet instead of flowing back to your heart. This condition, chronic venous insufficiency, raises pressure inside the smallest blood vessels until they burst. The result is inflammation, reddish-brown skin discoloration, and a type of dermatitis that causes persistent itching and burning.
The signs are distinct from other causes. You’ll typically notice swelling in your lower legs and ankles that worsens after standing or by the end of the day, skin that looks leathery or flaky, and a tired, achy feeling in your legs. Cramping at night is common. Left untreated, the skin can become so fragile that minor bumps create open sores called venous stasis ulcers.
Kidney Disease
Advanced kidney disease can cause intense, widespread itching that often affects the feet. As kidney function declines, waste products and minerals like calcium, phosphate, and parathyroid hormone accumulate in the blood. These substances act as irritants, triggering itching through inflammatory pathways rather than through any visible skin problem. The itching from kidney disease tends to be maddening and relentless, often worse at night, and doesn’t respond well to typical anti-itch creams. It correlates more with the buildup of these toxins than with overall kidney function, which means some people develop it earlier in their disease than expected.
Erythromelalgia: A Rarer Possibility
If your feet turn visibly red, feel hot to the touch, and burn intensely in episodes triggered by warmth, exercise, or tight shoes, erythromelalgia may be the explanation. This condition is defined by a triad of redness, warmth, and burning pain in the extremities. Episodes can last minutes to days and are characteristically relieved by cooling (fans, ice packs) or elevating your feet. It’s rare, but worth knowing about because people with erythromelalgia often go years before getting the right diagnosis.
How Doctors Figure Out the Cause
A visual exam and your symptom history can diagnose many causes. Athlete’s foot is usually identified on sight. Contact dermatitis may require patch testing, where small amounts of common shoe allergens are applied to your skin to see which ones trigger a reaction.
When neuropathy is suspected, doctors may order blood tests for blood sugar, B12, kidney function, and thyroid levels. If the results are inconclusive, a skin biopsy that measures the density of nerve fibers in a small punch of skin is considered the gold standard for diagnosing small fiber neuropathy, the type most associated with burning and itching. Nerve conduction studies and electromyography can evaluate larger nerve fibers, though they sometimes come back normal when only the smallest fibers are affected.
What Helps in the Meantime
For fungal infections, keeping your feet dry, changing socks frequently, and using antifungal treatments will address both the burning and itching. For contact dermatitis, identifying and avoiding the offending material is the most effective fix.
Nerve-related burning is harder to manage. Topical capsaicin patches (at prescription strength) have shown effectiveness comparable to standard oral medications for neuropathic pain, with fewer systemic side effects. Lidocaine patches can also help numb localized burning. Cooling your feet, wearing breathable shoes, and elevating your legs can ease symptoms from both neuropathy and circulation problems.
If the burning came on suddenly, especially after possible exposure to a toxin, or if you have diabetes and notice an open wound on your foot that appears infected, those are situations that call for immediate medical attention.