Medication and toxin-induced peripheral neuropathy.

Area of Science:

• Neurology
• Toxicology
• Pharmacology

Background:

• Medication and toxin-induced neuropathies are uncommon but significant due to potential reversibility.
• Numerous agents are implicated, though objective proof is often lacking for many.
• New drug approvals and expanded indications increase the recognition of drug-induced neuropathies.

Purpose of the Study:

• To review the causative agents, mechanisms, and diagnostic challenges of medication and toxin-induced neuropathies.
• To highlight the importance of identifying these neuropathies for timely intervention.
• To discuss the spectrum of neuropathic pathology and ongoing research into preventative strategies.

Main Methods:

• Literature review of established and emerging causative agents for neuropathy.
• Analysis of documented mechanisms of neurotoxicity from medications and toxins.
• Discussion of diagnostic criteria and challenges, particularly for chronic exposures.

Main Results:

• Chemotherapeutic agents and nucleoside analogs have clear links to neuropathy.
• Some agents cause axonal pathology, while others induce demyelination or conduction block, mimicking immune-mediated conditions.
• Neuropathy is a dose-limiting factor in some treatments, prompting research into prevention.

Conclusions:

• Accurate identification of drug- and toxin-induced neuropathies is essential for patient management.
• Understanding the diverse toxic mechanisms is key to addressing this neurological complication.
• Preventative strategies for treatment-limiting neuropathies are an active area of research.