What Is Peripheral Neuropathy?
Peripheral neuropathy refers to damage or dysfunction of the peripheral nerves — the network of nerves outside the brain and spinal cord that carry signals to and from the limbs, organs, and skin. When these nerves are damaged, they can misfire or fail to transmit signals properly, leading to pain, numbness, weakness,or other symptoms, most often in the hands and feet.
Common Symptoms
Symptoms vary depending on which nerves are affected — sensory, motor, or autonomic — and often start in the feet and hands before progressing upward.
- Tingling or “pins and needles” sensations
- Numbness or reduced ability to feel temperature or pain
- Burning or sharp, stabbing pain
- Muscle weakness or difficulty with coordination
- Sensitivity to touch
- Loss of balance or frequent stumbling
- In autonomic nerve involvement: changes in blood pressure, digestion, bladder function, or sweating
Common Causes
- Diabetes: The most common cause, due to prolonged high blood sugar damaging nerves over time
- Vitamin deficiencies: Particularly B12, B1, and B6
- Alcohol use: Chronic heavy use can damage nerve fibers
- Autoimmune conditions: Such as Guillain-Barré syndrome or lupus
- Infections: Including shingles, Lyme disease, and HIV
- Chemotherapy and certain medications
- Physical trauma or nerve compression: Such as carpal tunnel syndrome
- Kidney or liver disease
- Inherited disorders: Such as Charcot-Marie-Tooth disease
- In some cases, no clear cause is found (idiopathic neuropathy)
How Is It Diagnosed?
- Detailed medical history and physical/neurological examination
- Blood tests to check for diabetes, vitamin deficiencies, thyroid issues, or other underlying conditions
- Nerve conduction studies and electromyography (EMG) to assess nerve function
- Imaging or nerve biopsy in select cases
Managing Peripheral Neuropathy
Treatment focuses on addressing the underlying cause where possible and managing symptoms:
- Treating the root cause: Such as optimizing blood sugar control in diabetes or correcting vitamin deficiencies
- Medications: Certain antidepressants, anticonvulsants, or topical treatments can help reduce nerve pain
- Physical therapy: To maintain strength, balance, and mobility
- Lifestyle measures: Regular exercise, a balanced diet, limiting alcohol, and quitting smoking
- Foot care: Especially important for people with diabetes, to prevent injuries that go unnoticed due to numbness
- Assistive devices: Braces or orthotics for those with muscle weakness or balance issues
Living with Peripheral Neuropathy
With consistent management, many people find meaningful relief from symptoms and are able to prevent further nerve damage. Regular monitoring of underlying conditions,such as diabetes, plays a key role in slowing progression.
When to See a Doctor
Consult a doctor if you notice persistent numbness, tingling, weakness, or pain in your hands or feet —especially if it’s worsening, spreading, or affecting your balance or daily activities. Early diagnosis and treatment of the underlying cause can help prevent further nerve damage.