Peripheral Neuropathy: Causes, Symptoms & Relief - A Comprehensive Guide

Peripheral neuropathy affects nerves outside the brain and spinal cord, causing pain, numbness, tingling, and weakness—often in hands and feet.

Common Causes

• Diabetes (leading cause—diabetic neuropathy)
• Autoimmune diseases: Lupus, rheumatoid arthritis, Guillain-Barré
• Nutrient deficiencies: B12, B1, B6, E, copper
• Infections: Lyme, shingles, HIV, hepatitis C
• Toxins/medications: Chemo, heavy metals, alcohol excess
• Trauma/compression: Carpal tunnel, injuries
• Genetic disorders: Charcot-Marie-Tooth
• Idiopathic: No identifiable cause

Symptoms by Nerve Type

• Sensory: Burning, stabbing pain; numbness; tingling; loss of temperature/vibration sense
• Motor: Weakness, cramps, muscle wasting, foot drop
• Autonomic: Blood pressure drops, digestive issues, sweating abnormalities, sexual dysfunction

Diagnosis

• History & neurological exam
• Nerve conduction studies (NCS) & electromyography (EMG)
• Blood tests (glucose, B12, thyroid, autoimmune markers)
• Imaging (MRI) if structural compression suspected
• Skin biopsy (small fiber neuropathy)

Treatment & Management

• Treat underlying cause: Blood sugar control, B12 replacement, immunotherapy
• Symptom relief: Gabapentin, pregabalin, duloxetine, topical capsaicin/lidocaine
• Physical therapy: Strengthening, balance, gait training
• Lifestyle: Foot care, safe exercise, smoking cessation, limit alcohol
• Advanced: TENS, spinal cord stimulation, plasma exchange (for autoimmune)

Early diagnosis improves outcomes. See a neurologist for persistent symptoms.