Written by:

Overview

What Is Peripheral Neuropathy?

Peripheral neuropathy is damage or dysfunction affecting nerves outside the brain and spinal cord. It commonly affects the feet, legs, hands, or arms, although different types and numbers of nerves can be involved. Diabetes is a common cause, but many other medical conditions, medicines, toxins, nutritional problems, and inherited disorders can also lead to neuropathy.

Symptoms

Peripheral Neuropathy Symptoms

  • Numbness or reduced ability to feel touch, heat, or pain.
  • Tingling or a pins-and-needles sensation.
  • Burning pain, often in the feet or hands.
  • Sharp or electric-shock-like pain.
  • Increased sensitivity to light touch (hypersensitivity).
  • Muscle weakness that may affect walking, gripping, or climbing stairs.
  • Balance problems or unsteadiness.
  • Changes in sweating, digestion, bladder function, or sexual function (autonomic symptoms).

Protect your feet

Check areas with reduced feeling

Numb feet can make blisters, cuts, burns, or pressure injuries easy to miss. Check your feet regularly and arrange medical evaluation for new, worsening, or unexplained symptoms.

Causes

What Causes Peripheral Neuropathy?

Peripheral neuropathy can develop when nerve fibers or the protective covering around them are damaged. This disrupts the signals traveling between the brain, spinal cord, and the rest of the body. Diabetes and prolonged high blood glucose are common causes, but not every case is diabetic neuropathy.

  • Diabetes can damage peripheral nerves when blood glucose remains high over time.
  • Heavy or prolonged alcohol use can injure nerves and may occur alongside nutritional deficiencies.
  • Vitamin deficiencies, especially deficiencies affecting nerve health, can contribute to neuropathy.
  • Kidney disease, thyroid disease, and other chronic medical conditions can impair nerve function.
  • Autoimmune illnesses and infections can inflame or damage peripheral nerves.
  • Chemotherapy and some other medicines can cause nerve damage as a side effect.
  • Exposure to toxins, industrial chemicals, or heavy metals can injure nerves.
  • Inherited disorders can affect how nerves develop or function.
  • Physical nerve injury, pressure, or compression can cause symptoms in a specific area.
  • Sometimes no cause is identified, even after appropriate testing.

Risk Factors

Peripheral Neuropathy Risk Factors

MANAGEABLE FACTORS

Uncontrolled diabetes, heavy alcohol use, smoking, nutritional deficiencies, and exposure to neurotoxic medicines or chemicals may increase risk or worsen nerve damage. Managing chronic conditions, reviewing medicines with a clinician, and addressing nutrition or toxin exposure may help reduce risk.

LESS-MODIFIABLE FACTORS

Older age, family history, inherited disorders, and chronic medical conditions can increase the likelihood of neuropathy. These factors cannot always be changed, but regular care can help identify symptoms and limit complications.

Complications

Peripheral Neuropathy Complications

  • Falls can occur when weakness, numbness, or balance problems affect walking.
  • Burns or cuts may go unnoticed when protective sensation is reduced.
  • Foot ulcers and infections can develop from repeated pressure or untreated injuries.
  • Muscle wasting or weakness can reduce strength and movement.
  • Chronic nerve pain can interfere with sleep, mood, and daily activities.
  • Loss of mobility may occur when weakness, pain, or balance problems become severe.
  • Autonomic nerve damage can affect blood pressure, digestion, bladder function, or sexual function.

Diagnosis

How Peripheral Neuropathy Is Diagnosed

What Your Clinician May Ask

  • A clinician may ask about the symptom pattern, when it began, and whether it is changing.
  • They may review medicines, alcohol use, medical conditions, family history, and possible toxin exposure.
  • A physical examination may check muscle strength, reflexes, coordination, and sensation.
  • The feet and other affected areas may be inspected for injuries, pressure points, or skin changes.
  • Blood or urine tests may look for diabetes, vitamin deficiencies, thyroid or kidney disease, and other causes.
  • Nerve conduction studies measure how quickly and strongly electrical signals travel through nerves.
  • Electromyography can assess the electrical activity of muscles and the nerves controlling them.
  • Selected imaging studies or specialized tests may be used when a structural problem or specific cause is suspected.

Testing is individualized based on the symptoms and examination findings. Identifying the cause is important because some nerve damage can be slowed, treated, or prevented from worsening.

Treatment & Management

Peripheral Neuropathy Treatment and Management

  • Managing blood glucose, thyroid disease, kidney disease, or another underlying condition may slow further nerve damage.
  • Nutritional deficiencies can be corrected under clinical guidance.
  • A causative medicine should be changed or stopped only with advice from the prescribing clinician.
  • Prescription treatments may help relieve nerve pain, depending on a person’s health and other medicines.
  • Physical or occupational therapy can improve strength, balance, movement, and safety.
  • Mobility aids may help prevent falls when weakness or balance problems are present.
  • Careful foot care, protective footwear, and regular inspection can help prevent wounds and infections.

Use care with treatment claims

Match treatment to the cause

Do not stop prescribed medicines or rely on claims that an unproven product can “cure” neuropathy. Discuss treatment options, supplements, and concerns with a healthcare professional.

Prevention

Can Peripheral Neuropathy Be Prevented?

  • Manage diabetes and other chronic conditions according to an individualized care plan.
  • Avoid or limit alcohol, especially if alcohol may be contributing to nerve damage.
  • Do not smoke, because smoking can worsen circulation and overall nerve health.
  • Maintain adequate nutrition and ask a clinician about possible vitamin deficiencies.
  • Review medicines and possible toxin exposures with a healthcare professional.
  • Exercise safely to support strength, balance, circulation, and general health.
  • Inspect your feet daily when sensation is reduced, looking for blisters, cuts, redness, or swelling.
  • Wear protective, well-fitting footwear and avoid walking barefoot when foot sensation is impaired.

There is no single prevention method for every cause of peripheral neuropathy. People with diabetes or other risk factors should follow individualized recommendations for monitoring, treatment, and foot care to reduce progression and complications.

Outlook and Prognosis

Outlook and Prognosis for Peripheral Neuropathy

Some neuropathies improve or become stable after the underlying cause is treated, while others are long-lasting or progressive. Recovery is not guaranteed, so treatment may focus on controlling symptoms, preserving function, and preventing injuries. Even when nerve damage cannot be reversed, careful management can support safety and quality of life.

When Should You See a Doctor

When Should You See a Doctor?

  • Arrange medical care for persistent numbness or tingling without a clear explanation.
  • Seek evaluation for burning pain or repeated electric-shock-like pain.
  • Contact a clinician about new or worsening weakness.
  • Discuss new balance problems or unsteadiness with a healthcare professional.
  • Arrange care when symptoms interfere with sleep, work, walking, or other daily activities.
  • People with diabetes or another risk condition should report new nerve symptoms promptly.

Seek prompt help

Some complications need urgent assessment

Seek urgent care for rapidly worsening weakness, inability to walk, a serious burn or wound on a numb foot, spreading redness, or fever. Sudden nerve symptoms may signal another emergency condition and require immediate assessment.

Branches

1 topic