Peripheral Neuropathy

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Overview

Peripheral neuropathy is a condition caused by damage to the peripheral nerves, which are the nerves outside the brain and spinal cord. These nerves control sensation, movement, and automatic body functions.

The condition most often affects the hands and feet and can interfere with feeling, muscle control, and organ function. Peripheral neuropathy may develop gradually or suddenly and can be temporary or permanent.

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Symptoms

Symptoms depend on the type of nerves affected.

Sensory nerve symptoms
  1. Numbness or tingling in the hands or feet
  2. Burning, sharp, or shooting pain
  3. Increased sensitivity to touch
  4. Difficulty sensing temperature changes
  5. Loss of balance or coordination
  1. Muscle weakness
  2. Muscle wasting
  3. Twitching or cramps
  4. Difficulty with movement or paralysis in severe cases
  1. Dizziness or fainting
  2. Reduced sweating or heat intolerance
  3. Digestive issues such as constipation or diarrhea
  4. Bladder problems
  5. Sexual dysfunction

Symptoms often begin in the feet or hands and may spread upward over time.

Causes

Peripheral neuropathy can result from many underlying conditions.

Common causes include:

  1. Diabetes
  2. Alcohol use
  3. Vitamin deficiencies, especially B12 or folate
  4. Kidney disease
  5. Autoimmune disorders
  6. Infections
  7. Exposure to toxins or certain medications
  8. Genetic conditions

In many cases, more than one factor may contribute.

Diagnosis

Diagnosis begins with a medical history and physical examination, including a neurological assessment.

Tests may include:

  1. Blood tests to identify underlying conditions
  2. Nerve conduction studies (NCV) and electromyography (EMG)
  3. Nerve or skin biopsy in select cases
  4. Autonomic testing to evaluate nerve function
  5. MRI or CT scans to identify structural causes

These tests help determine the type and severity of nerve damage.

Treatment Options

Treatment focuses on managing symptoms and treating the underlying cause.

Common treatment options include:

  1. Medications such as anticonvulsants or antidepressants
  2. Pain relievers and topical treatments like lidocaine
  3. Managing underlying conditions, such as controlling blood sugar in diabetes
  4. Lifestyle changes such as quitting smoking and proper foot care
  5. Physical therapy and supportive devices such as braces

While some cases can improve, others require long-term management to control symptoms and prevent progression.

When to Seek Evaluation

Persistent lower back pain, neck pain, or radiating nerve pain should not be ignored. Early evaluation allows for proper diagnosis and targeted treatment, helping prevent progression and long-term complications.