Distal Symmetric Polyneuropathy: A Review

Area of Science:

• Neurology
• Diabetology

Background:

• Peripheral neuropathy affects 2-7% of the population, causing pain, falls, and amputations.
• Distal symmetric polyneuropathy is the most common subtype, necessitating a review of diagnostic and therapeutic progress.

Purpose of the Study:

• To review recent diagnostic and therapeutic advances in distal symmetric polyneuropathy.
• To identify areas for improvement in patient care and treatment strategies.

Main Methods:

• Review of current evidence on diagnostic testing, including laboratory workups and advanced imaging.
• Analysis of therapeutic options for neuropathic pain and prevention strategies.
• Evaluation of the role of neurologists and specialists in managing complex cases.

Main Results:

• Limited routine laboratory testing is supported for distal symmetric polyneuropathy.
• Specific tests like CBC, metabolic panel, vitamin B12, and glucose measurements are recommended.
• Strong evidence supports certain antidepressants and calcium channel ligands for neuropathic pain.
• Intensive glucose control benefits type 1 diabetes but not type 2 diabetes in preventing neuropathy.

Conclusions:

• Guideline-concordant testing for distal symmetric polyneuropathy needs improvement.
• The utility of electrodiagnostic tests and MRI requires further definition.
• Neuropathic pain remains underrecognized and undertreated despite available medications.
• Novel disease-modifying treatments are essential for preventing and treating peripheral neuropathy, particularly in type 2 diabetes.