Roughly 20 to 30 million Americans live with some form of peripheral neuropathy, the umbrella term for damage to the nerves outside the brain and spinal cord. Diabetes is the leading cause — accounting for roughly a third to a half of cases in different estimates — but more than 100 distinct causes have been identified, from chemotherapy drugs to vitamin deficiencies to autoimmune disease. The hallmark symptoms of burning, tingling, numbness, and weakness in the feet and hands often start subtly and can worsen over months or years if the underlying cause goes unaddressed. This guide is educational and does not replace an evaluation by a clinician who can examine you.
What Goes Wrong in Neuropathy
Peripheral nerves carry signals between the central nervous system and the rest of the body. They include sensory fibers (which transmit touch, temperature, and pain), motor fibers (which control muscles), and autonomic fibers (which help regulate blood pressure, sweating, digestion, and heart rate). Different neuropathies damage different fiber types, which is why one person may have severe burning pain while another has mostly weakness or dizziness.
According to the NINDS, neuropathy can be classified by which nerves are involved (mono-, multi-, or polyneuropathy), the underlying mechanism (demyelinating vs axonal), and the cause. Diabetic peripheral neuropathy, the most common form in the US, typically begins as a length-dependent sensory polyneuropathy — meaning symptoms start in the longest nerves first, in the toes and feet, and gradually work upward in a “stocking-glove” distribution.
The Many Causes
Diabetes is the leading cause, and estimates suggest up to about half of people with diabetes develop some neuropathy over their lifetime. Importantly, a large share of people with diabetic neuropathy have few or no symptoms, which raises the risk of unnoticed foot injuries.
Other major causes include alcohol-related neuropathy, vitamin B12 and folate deficiency, chemotherapy (especially platinum compounds, taxanes, and bortezomib), HIV, autoimmune conditions like Guillain-Barré syndrome and CIDP, hereditary neuropathies such as Charcot-Marie-Tooth disease, hypothyroidism, kidney disease, certain infections, and exposure to heavy metals or toxins. Some medications and, occasionally, very high doses of vitamin B6 can also injure nerves. Idiopathic neuropathy — meaning no identifiable cause despite a thorough workup — accounts for roughly a quarter to a third of cases, per the Mayo Clinic. Because the list is long and the treatments differ, pinning down the cause is central to management.
Symptoms by Fiber Type
Sensory symptoms include numbness, tingling, burning, electric-shock sensations, and pain that often worsens at night. Some people describe walking on sand, on broken glass, or with socks bunched up under their feet. Loss of vibration sense and proprioception leads to balance problems, especially in the dark.
Motor symptoms involve weakness, muscle wasting, foot drop, and difficulty with fine hand movements like buttoning shirts. Autonomic symptoms — common in diabetes and some autoimmune neuropathies — include orthostatic hypotension (lightheadedness on standing), gastroparesis, urinary retention, abnormal sweating, and erectile dysfunction.
Small-fiber neuropathy preferentially damages the thin nerve fibers that carry pain and autonomic signals. It can produce severe burning pain with relatively normal nerve conduction studies, which means standard testing can miss it and additional tests may be needed.
Diagnostic Workup
A careful history and exam are the foundation. Clinicians test vibration with a 128-Hz tuning fork, monofilament sensation, ankle reflexes, and proprioception. Nerve conduction studies and electromyography (EMG) measure how well large fibers conduct, characterize the pattern, and help distinguish demyelinating from axonal damage.
Bloodwork typically includes hemoglobin A1c (looking for diabetes), B12 and methylmalonic acid, TSH, a complete metabolic panel, and serum protein electrophoresis to screen for monoclonal proteins that can cause neuropathy. Depending on the picture, specialized testing may include autoantibody panels, genetic testing, skin biopsy for small-fiber neuropathy, and occasionally nerve biopsy. The specific tests are chosen by your clinician based on your history and exam.
Treating the Underlying Cause
Addressing the cause is the single most important part of treatment. For diabetic neuropathy, the most effective step is good glucose control — though the benefit appears stronger for preventing neuropathy and slowing progression in type 1 diabetes than in type 2. NIDDK notes that keeping blood glucose in a healthy range can help prevent or delay nerve damage. Blood pressure, cholesterol, and smoking cessation also matter for overall nerve and vascular health.
For B12 deficiency, replacement (oral or injected) can improve symptoms in many people, especially when started before axonal damage becomes severe. Stopping a causative drug, treating hypothyroidism, abstaining from alcohol, or treating CIDP with IVIG, plasma exchange, or immunosuppressants are all examples of cause-directed therapy. These decisions belong with your care team, since the right approach depends on the specific diagnosis.
Symptom Management
Several drug classes are used for neuropathic pain. The American Academy of Neurology’s practice guideline for painful diabetic polyneuropathy and other major guidelines point to a similar set of first-line oral options — gabapentin, pregabalin, duloxetine, and a tricyclic such as amitriptyline or nortriptyline — which show broadly comparable effectiveness, so the choice often comes down to side effects, other health conditions, and cost. These are prescription medications that require dose titration and monitoring: do not start, adjust, or combine them on your own, and work with your prescriber to find the right option and dose. Topical capsaicin and lidocaine patches help some people. Conventional opioids are generally not recommended for chronic neuropathic pain because of limited long-term benefit and the risk of dependence.
Non-pharmacologic approaches matter too. Aerobic exercise has shown small-to-moderate benefit in randomized trials. Transcutaneous electrical nerve stimulation (TENS), acupuncture, and certain topical creams have variable evidence. Be cautious with supplements marketed as neuropathy “cures” — no supplement is proven to reverse nerve damage, and some (such as high-dose B6) can actually cause neuropathy, so discuss any supplement with a clinician first. Foot care — daily inspection, well-fitted shoes, and podiatry follow-up — helps prevent the ulcers and, in severe cases, amputations that drive much of diabetic neuropathy’s long-term harm.
When to seek emergency care: Call 911 or go to the nearest emergency room if you experience rapidly progressive weakness over hours to days (possible Guillain-Barré syndrome), new bowel or bladder incontinence with leg weakness (possible cauda equina syndrome), severe lightheadedness with fainting, or signs of a foot infection (spreading redness, swelling, warmth, drainage, or fever), particularly if you have diabetic neuropathy.
Living With Neuropathy
Falls are a major concern, because reduced sensation and balance make trips and stumbles more likely. Home modifications — adequate lighting, removing loose rugs, and grab bars in bathrooms — reduce risk. Physical therapy improves balance and can reduce falls in studies of older adults with neuropathy.
Sleep is often disrupted by nighttime burning. Some clinicians recommend a bedtime dose of a medication chosen for both pain and sleep benefit, but that should be individualized by your prescriber rather than self-directed. Cool sheets, foot fans, and avoiding alcohol close to bedtime help some people. Our guide to chronic conditions covers broader day-to-day management approaches.
When to See a Doctor
Persistent numbness, tingling, or burning in the feet or hands warrants evaluation, especially in people with diabetes. Sudden weakness, new balance problems, autonomic symptoms, or a known trigger like chemotherapy all justify a primary care visit and possible neurology referral.
People with diabetes should have regular foot exams and prompt evaluation of any new foot sore. Patients on chemotherapy should report new neuropathic symptoms, because dose adjustments can sometimes limit permanent damage. Those with autoimmune symptoms or rapid progression deserve urgent neurology referral.
Frequently Asked Questions
Can peripheral neuropathy be reversed?
Some causes are at least partly reversible. B12 deficiency, certain drug-induced neuropathies, and some autoimmune neuropathies can improve substantially with treatment. Diabetic neuropathy can stabilize and partially improve with glucose control, but established axonal damage often does not fully recover. Idiopathic neuropathy generally is not reversed, though symptoms can often be managed.
How long does peripheral neuropathy last?
It depends on the cause. Acute neuropathies like Guillain-Barré often improve over weeks to months. Chronic neuropathies tied to ongoing causes (diabetes, alcohol use, hereditary disease) typically persist for years. Chemotherapy-induced neuropathy improves in some patients within 6 to 12 months but persists in others.
What vitamins help peripheral neuropathy?
B12 replacement helps when deficiency is the cause. Alpha-lipoic acid has modest supportive evidence for diabetic neuropathy in some studies. High-dose B6 can actually cause neuropathy and should be avoided. Other supplements have weaker evidence and can interact with medications, so discuss any of them with a clinician rather than self-treating.
Is peripheral neuropathy the same as fibromyalgia?
No. Fibromyalgia is a central pain syndrome with normal standard nerve testing, while peripheral neuropathy reflects identifiable nerve damage. The two can coexist. Skin biopsies showing small-fiber changes in a subset of people with fibromyalgia suggest some overlap exists.
The Bottom Line
Peripheral neuropathy is often treatable but not always curable, and the path forward depends on identifying the cause. Diabetes, B12 deficiency, alcohol, autoimmune disease, and medication exposure should all be considered before settling on “idiopathic.” Prescriber-directed medications can blunt nerve pain while cause-directed treatment, foot care, and exercise reduce long-term complications. Anyone with persistent burning, numbness, or weakness in the feet or hands should pursue a workup early — outcomes tend to favor people who act before nerve damage becomes irreversible.
Medical disclaimer: This article is for general education and is not medical advice or a substitute for evaluation by a qualified clinician. Medications for neuropathic pain (such as gabapentin, pregabalin, duloxetine, and tricyclics) require a prescription and careful dose titration — do not start, stop, combine, or change the dose of any medication on your own. No supplement is a proven cure for nerve damage. Seek prompt or emergency care for rapidly worsening weakness, new bladder or bowel problems, fainting, or signs of a foot infection, and talk with your clinician about your specific situation.
Sources
- NINDS (National Institute of Neurological Disorders and Stroke) — Peripheral Neuropathy: ninds.nih.gov
- Mayo Clinic — Peripheral neuropathy: mayoclinic.org
- NIDDK — Diabetic Neuropathy (Nerve Damage): niddk.nih.gov
- American Academy of Neurology (2022) — Oral and Topical Treatment of Painful Diabetic Polyneuropathy: Practice Guideline Update: neurology.org
- MedlinePlus / U.S. National Library of Medicine — Peripheral nerve disorders: medlineplus.gov