Peripheral Neuropathy: Evaluation and Differential Diagnosis

Area of Science:

• Neurology
• Family Medicine

Background:

• Peripheral neuropathy is a common neurologic condition with a prevalence of 1-7% in the general population, increasing with age.
• Identifiable causes include diabetes mellitus, nerve compression/injury, alcohol, toxins, hereditary diseases, and nutritional deficiencies.
• Idiopathic cases account for 25-46% of peripheral neuropathy.

Purpose of the Study:

• To outline the clinical classification, diagnosis, and management of peripheral neuropathy.
• To emphasize the importance of identifying and treating underlying causes.

Main Methods:

• Clinical classification based on symptoms and electrodiagnostic studies.
• Comprehensive patient history and physical examination.
• Judicious laboratory testing including blood counts, metabolic profiles, glucose, vitamin B12, TSH, and serum protein electrophoresis.

Main Results:

• Early symptoms include sensory alterations (loss, numbness, pain) in a "stocking and glove" pattern, progressing to weakness and atrophy.
• Initial lab tests help identify common causes.
• Further testing like electrodiagnostic studies or nerve biopsy may be needed if initial evaluation is inconclusive.

Conclusions:

• Peripheral neuropathy diagnosis requires a thorough evaluation focusing on treatable etiologies.
• Management centers on addressing the underlying cause, with medications available for symptom relief.