Understanding Peripheral Neuropathy: Causes, Symptoms, and Treatment

What Is Peripheral Neuropathy?

Peripheral neuropathy refers to damage to the peripheral nerves — the vast network of nerves that carry signals between the brain and spinal cord and the rest of the body. When these nerves are damaged, the communication between the brain and the limbs is disrupted, causing symptoms like numbness, tingling, pain, and weakness.

Common Causes

Diabetes

Diabetic neuropathy is the most common form of peripheral neuropathy. Prolonged high blood sugar damages nerve fibers, especially in the feet and legs. Up to 50% of people with diabetes develop neuropathy over time.

Other Common Causes

Vitamin deficiencies — B12, B1 (thiamine), B6
Alcohol-related nerve damage — chronic alcohol use is toxic to nerves
Autoimmune conditions — Guillain-Barré syndrome (GBS), CIDP
Medications — certain chemotherapy drugs, antibiotics
Infections — HIV, leprosy, hepatitis C
Kidney disease — uremic neuropathy
Thyroid disorders — hypothyroidism
Hereditary conditions — Charcot-Marie-Tooth disease

Symptoms to Watch For

Sensory Symptoms

Numbness or reduced sensation in hands and feet
Tingling or “pins and needles” sensation
Burning or shooting pain
Increased sensitivity to touch
Loss of position sense — unsteadiness, especially in the dark

Motor Symptoms

Muscle weakness, especially in the feet and hands
Difficulty with grip or buttoning clothes
Foot drop — difficulty lifting the front of the foot
Muscle wasting in advanced cases

Autonomic Symptoms

Dizziness on standing (postural hypotension)
Digestive problems
Excessive sweating or inability to sweat
Bladder dysfunction

How Is Neuropathy Diagnosed?

Detailed clinical examination — sensory testing, reflex assessment, muscle strength
Nerve conduction studies (NCS) — measures how fast and how well nerves conduct electrical signals
Electromyography (EMG) — evaluates muscle electrical activity
Blood tests — HbA1c, vitamin B12, thyroid function, kidney function, inflammatory markers
Nerve biopsy — rarely needed, for specific cases

Treatment Approaches

Treating the Underlying Cause

Diabetes — strict blood sugar control can slow or prevent progression
Vitamin deficiency — supplementation (B12 injections or oral supplements)
Autoimmune neuropathy — immunotherapy (IVIG, steroids, plasmapheresis)
Toxic causes — removing the offending agent

Pain Management

Medications for neuropathic pain — pregabalin, gabapentin, duloxetine, amitriptyline
Topical treatments for localized pain
Physical therapy and exercise
Transcutaneous electrical nerve stimulation (TENS)

Supportive Care

Foot care education — especially important for diabetic neuropathy
Balance training and fall prevention
Occupational therapy for hand function
Proper footwear and orthotics

Prevention Tips

Manage diabetes effectively — maintain HbA1c at target levels
Eat a balanced diet — ensure adequate B vitamins
Limit alcohol — or avoid it entirely
Exercise regularly — improves blood flow to nerves
Protect your feet — daily inspection, proper footwear
Regular health check-ups — early detection of risk factors

Dr. Chetan Padghan offers comprehensive neuromuscular evaluation including EMG/NCS studies in Pune. If you are experiencing numbness, tingling, or nerve pain, schedule a consultation for expert diagnosis and treatment.