Peripheral Neuropathy in the Feet: Symptoms, Causes & Podiatric Care

Related Conditions

✅ Medically reviewed by Dr. Thomas Biernacki, DPM — Board-Certified Podiatrist · Last updated April 6, 2026

Peripheral neuropathy — damage to the nerves outside the brain and spinal cord — affects over 20 million Americans, and the feet are almost always the first area affected. For specialized treatment, see our neuropathy treatment Michigan. For many patients, the diagnosis of peripheral neuropathy comes from a podiatrist who notices it during a routine foot examination, before the neurologist has even been consulted.

At Balance Foot & Ankle in Howell and Bloomfield Township, MI, we screen every patient for peripheral neuropathy and provide specialized foot care for those who have it. Understanding the condition — including what causes it and what the symptoms mean — helps you protect your feet and navigate treatment options with your full medical team.

What Is Peripheral Neuropathy?

Peripheral neuropathy refers to damage or disease affecting the peripheral nerves — the network connecting the brain and spinal cord to the rest of the body. When these nerves are damaged, they may send incorrect signals (causing pain or abnormal sensations), stop sending signals (causing numbness), or both.

In the lower extremities, peripheral neuropathy follows a characteristic “stocking-and-glove” pattern — beginning at the toes and progressing up the foot, then the leg. Most patients notice foot symptoms long before any leg symptoms develop.

Types of Peripheral Neuropathy: What Gets Damaged

Fiber Type	Function	Symptoms When Damaged
Large myelinated fibers	Vibration sense, proprioception (position sense), motor function	Balance problems, difficulty walking on uneven ground, weakness, foot drop
Small unmyelinated C fibers	Pain and temperature detection	Burning, stabbing pain; inability to feel heat or cold (burn risk)
Autonomic fibers	Sweat glands, blood vessel regulation	Dry, cracked skin; loss of sweating; skin color changes

Many patients have mixed neuropathy affecting all three fiber types simultaneously. The pattern of symptoms reflects which fibers are most affected.

Common Causes of Peripheral Neuropathy

Cause	Mechanism	Notes
Diabetes mellitus	Chronic hyperglycemia damages nerve axons and their blood supply (vasa nervorum)	Most common cause — affects 50%+ of diabetics with >10 years of disease
Prediabetes / metabolic syndrome	Same mechanism as diabetes, earlier and subtler	Significant cause of “idiopathic” neuropathy that was previously unexplained
Vitamin B12 deficiency	B12 is required for myelin synthesis and nerve repair	Common in vegans, metformin users, elderly; highly treatable
Alcohol use disorder	Direct neurotoxic effect + nutritional deficiency	Alcoholic neuropathy is dose-dependent
Chemotherapy (CIPN)	Many chemotherapy agents are directly neurotoxic	Platinum-based, taxane, and vinca alkaloid agents are most implicated
Hypothyroidism	Low thyroid slows nerve metabolism	Often overlooked; corrects with thyroid replacement
Chronic kidney disease	Uremic toxins damage peripheral nerves	Uremic neuropathy; improves with dialysis
Autoimmune conditions	CIDP, vasculitis, lupus, Sjögren’s — immune attack on nerve	May be treatable with immunotherapy
Hereditary neuropathy	Charcot-Marie-Tooth disease and variants	Foot deformity (cavus foot, hammertoes) often accompanies CMT
Idiopathic	No identifiable cause found after workup	25-30% of cases; often length-dependent small fiber neuropathy

Symptoms of Peripheral Neuropathy in the Feet

Symptoms vary significantly depending on which nerve fibers are affected. The most common presentations include:

• Burning pain: A constant or intermittent burning sensation in the feet, often worse at night. One of the most distressing symptoms of small fiber neuropathy.
• Tingling or “pins and needles”: Paresthesias starting at the toes, often moving proximally.
• Numbness: Reduced or absent sensation — the most dangerous symptom, as it prevents detection of wounds, pressure injuries, and burns.
• Electric shock-like pain: Brief, lancinating pain shooting through the foot or toes.
• Allodynia: Normal non-painful stimuli (like bed sheets touching the feet at night) trigger pain — characteristic of sensitized small fiber neuropathy.
• Balance problems: Proprioceptive loss from large fiber damage impairs balance, increasing fall risk. Patients may feel unsteady, especially on uneven surfaces or in the dark.
• Weakness / foot drop: Motor fiber involvement causes progressive weakness of the foot and ankle muscles. Foot drop (difficulty lifting the foot when walking) develops in severe cases.
• Dry, cracked skin: Autonomic fiber damage reduces sweating, causing the skin to become dry and prone to fissuring.

Diagnosis: What Tests Are Used

• Semmes-Weinstein monofilament test: A 10-gram monofilament is pressed against specific foot sites. Inability to feel the filament indicates significant sensory loss — a major predictor of foot ulcer risk.
• Vibration testing: 128Hz tuning fork applied to the hallux and malleolus; inability to feel vibration indicates large fiber involvement.
• Temperature testing: Hot and cold perception tests for small fiber function.
• Ankle reflexes: Reduced or absent Achilles reflex is an early sign of large fiber neuropathy.
• Nerve conduction study (NCS) and EMG: Measure the speed and strength of nerve and muscle electrical signals — the gold standard for diagnosing and characterizing neuropathy.
• Skin punch biopsy: The only way to definitively diagnose small fiber neuropathy — measures intraepidermal nerve fiber density.
• Blood work: Fasting glucose, HbA1c, B12, folate, thyroid panel, complete metabolic panel, SPEP (for M-protein).

Podiatric Management of Peripheral Neuropathy

There is currently no treatment that regenerates damaged peripheral nerves in most cases of peripheral neuropathy. The primary goals of podiatric care are:

• Prevent foot wounds: Daily inspection, protective footwear (never barefoot), diabetic-style foot care protocols, and patient education
• Address skin and nail changes: Regular professional nail care, treatment of fungal infections, debridement of calluses and corns that create pressure sores
• Offload pressure points: Custom orthotics redistribute load away from pressure-prone areas; accommodative orthotics for insensate feet use softer materials that protect without creating pressure
• Manage painful neuropathy: MLS laser therapy has emerging evidence for reducing neuropathic pain and improving nerve function in diabetic neuropathy; topical agents (capsaicin, lidocaine); referral to neurology or pain management for systemic medications
• Prevent falls: Balance training, ankle strengthening, appropriate footwear with non-slip soles
• Manage Charcot neuroarthropathy risk: Patients with severe neuropathy are at risk for Charcot foot; any unexplained swelling or warmth requires urgent evaluation

Treating the Underlying Cause

When the cause of neuropathy is treatable, addressing it can halt progression and in some cases improve symptoms:

• Diabetes: Strict glycemic control (HbA1c below 7%) significantly slows neuropathy progression; some patients see partial improvement
• B12 deficiency: Supplementation or injections typically improve neuropathy within weeks to months
• Hypothyroidism: Thyroid hormone replacement improves neuropathic symptoms in most patients
• Alcohol: Cessation of alcohol use with nutritional supplementation often produces meaningful improvement
• Autoimmune neuropathy: IVIG, corticosteroids, or other immunotherapy can improve or stabilize autoimmune neuropathy

In-Office Treatment at Balance Foot & Ankle

If home care isn’t resolving your neuropathy symptoms, a visit with a board-certified podiatrist is the fastest path to accurate diagnosis and a personalized plan. At Balance Foot & Ankle Specialists, Dr. Tom Biernacki, Dr. Carl Jay, and Dr. Daria Gutkin offer same-day and next-day appointments at both our Howell and Bloomfield Hills offices. We perform on-site diagnostic ultrasound, digital X-ray, conservative care, advanced regenerative treatments, and minimally invasive surgery when indicated.

Call (810) 206-1402 or request an appointment online. Most insurance plans accepted, including Medicare, Blue Cross Blue Shield, Aetna, Cigna, and United Healthcare.

Frequently Asked Questions

Q: Can peripheral neuropathy be reversed?
A: In some cases, yes — particularly when the cause is treatable (B12 deficiency, hypothyroidism, alcohol, early diabetes). In most cases of established diabetic neuropathy, progression can be slowed but full reversal is uncommon. Early detection and treatment of the underlying cause gives the best outcome.

Q: Is peripheral neuropathy painful?
A: About 30-40% of people with neuropathy experience significant pain (painful neuropathy). Others have primarily numbness with minimal pain. Paradoxically, the total loss of sensation in severely affected feet may actually reduce the burning pain experienced in earlier stages.

Q: Why does neuropathy feel worse at night?
A: Several factors converge at night: the absence of competing sensory input from activity, reduced cortical suppression during light sleep, reduced blood pressure reducing nerve oxygenation, and possible circadian variation in inflammatory mediators.

Q: I have diabetes but no pain — does that mean I don’t have neuropathy?
A: No. Many patients with significant sensory loss have little or no pain. The absence of pain in a diabetic foot is actually more dangerous, not reassuring — it means the protection that pain normally provides is gone. Annual monofilament testing is essential for all diabetic patients.

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Related Patient Guides

• Diabetic Foot Care: Daily Routine & Warning Signs
• Charcot Foot: Symptoms, Stages & Treatment
• Tarsal Tunnel Syndrome: Symptoms & Treatment
• Peripheral Arterial Disease: Foot Symptoms Guide
• 3D Custom Orthotics at Balance Foot & Ankle
• Toenail Health: What Your Nails Reveal
• Medicare Diabetic Shoe Benefit: What You Get & How to Qualify
• Foot Care for Seniors: Common Problems & Fall Prevention

Differential Diagnosis: What Else Could It Be?

Several conditions share symptoms with Diabetic Neuropathy and are commonly misdiagnosed in the first office visit. Considering these alternatives is part of every Balance Foot & Ankle exam:

• Tarsal tunnel syndrome. Burning radiating into the arch with positive Tinel’s at the medial ankle.
• Peripheral artery disease. Pain with walking that resolves with rest, weak pulses, hair loss on toes.
• Lumbar radiculopathy. Symptoms following a dermatome, often with back pain — MRI of spine, not foot.

If your symptoms don’t fit the textbook pattern, ask your podiatrist which differentials they ruled out — that conversation often shortcuts months of trial-and-error treatment.

Most Common Mistake We See

The most common mistake we see is: Stopping B-vitamin supplementation as soon as symptoms improve. Fix: maintain supplementation for 6-18 months alongside strict glucose control.

Warning Signs That Need Same-Day Care

Dr. Tom’s Top 3 — The Premium Foot Pain Stack (2026)

If you only buy three things for foot pain, get these. PowerStep + CURREX orthotics correct the underlying foot mechanics, and Dr. Hoy’s pain gel delivers fast topical relief. This is the exact stack Dr. Tom Biernacki, DPM gives his Michigan podiatry patients on visit one — over 10,000 patients have used this exact combination.

Frequently Asked Questions

When should I see a podiatrist?

See a podiatrist if: foot or ankle pain has lasted more than 2–4 weeks without improvement, you’re changing your gait to avoid pain, you have an open wound or sore that isn’t healing, you notice nail discoloration or thickening, you have diabetes and any foot concern, or pain is severe enough to wake you at night. Most foot conditions are easier and cheaper to treat early — what starts as a minor issue can become a surgical problem with months of delay.

What is the difference between a podiatrist and an orthopedic surgeon?

Podiatrists (DPM — Doctor of Podiatric Medicine) specialize exclusively in the foot, ankle, and lower leg. Orthopedic surgeons (MD/DO) have broader musculoskeletal training but variable foot/ankle subspecialization. For foot and ankle-specific problems, a podiatrist often has more focused training and experience. For injuries involving the leg above the ankle, complex pediatric cases, or multi-level reconstruction, orthopedic consultation may be appropriate. We frequently co-manage patients with orthopedic colleagues.

How do I know if my foot pain is serious?

Signs that warrant same-day or next-day evaluation: severe pain that appeared suddenly without clear cause, swelling, redness, and warmth that appeared suddenly (possible gout, infection, or Charcot fracture), an open wound that looks infected (redness spreading, pus, warmth), inability to bear weight, or any foot problem in a diabetic patient. Pain that’s been present for weeks and is stable is important but not an emergency — schedule within 1–2 weeks.

Can foot problems cause back and knee pain?

Yes — this is a kinetic chain effect. Abnormal foot mechanics (overpronation, supination, leg length discrepancy) cause compensatory changes in knee, hip, and lumbar alignment. Roughly 30% of patients presenting to our clinic with knee pain have a treatable foot-level biomechanical cause. Correcting foot mechanics with orthotics or appropriate footwear often provides significant knee and back relief. If you have chronic knee or back pain and haven’t had your foot mechanics evaluated, it’s worth a consult.

Are orthotics worth it?

For the right conditions, yes — custom orthotics are among the most cost-effective interventions in podiatry. They’re most effective for: plantar fasciitis, flat feet with secondary knee/back pain, leg length discrepancy, metatarsalgia, posterior tibial tendon dysfunction, and diabetic foot pressure management. Quality OTC orthotics ($35–60) resolve symptoms for 60% of patients with mild-to-moderate conditions. Custom orthotics are appropriate when OTC options have failed or when the biomechanical problem is complex. We cast custom orthotics in-office.

How do I choose the right running shoes?

Start with your foot type (flat, neutral, high arch) and running pattern (overpronator, neutral, supinator). Flat feet and overpronators do best in stability or motion-control shoes. Neutral feet do well in neutral-cushioned shoes. High arches need maximum cushioning with flexible soles. Always buy running shoes at the end of the day (foot swelling peaks then), get properly fitted by a specialist, and replace every 300–500 miles. If you’ve been injured repeatedly, a gait analysis can identify the mechanical flaw driving your injury pattern.

What is the difference between a sprain and a fracture?

A sprain is a ligament injury (the tissue connecting bones); a fracture is a break in the bone itself. Both can occur with the same trauma (ankle roll, fall). The old test — ‘if you can walk, it’s not broken’ — is wrong; many fractures are initially weight-bearable. Key differences: a fracture typically produces localized bone tenderness along the bone itself, while a sprain is tender over the ligament. X-ray is the standard to differentiate. High-grade sprains without proper treatment can be as disabling as fractures.

How do I prevent foot and ankle injuries?

The four most impactful prevention strategies: (1) Supportive, appropriately fitted footwear for your foot type and activity. (2) Gradual activity progression — the 10% rule (never increase weekly mileage or intensity by more than 10%). (3) Regular calf and ankle mobility work. (4) Strengthening the posterior tibial tendon, peroneals, and intrinsic foot muscles. Most overuse injuries are preventable; most acute injuries are not — but ankle sprain recurrence (60–70% without rehab) is prevented by balance and proprioception training.