Alcoholic Neuropathy

AI Summary

Alcoholic neuropathy is common in alcohol use disorder and reflects a spectrum where neurotoxicity and nutritional deficiency both contribute.
These mechanisms converge to produce length-dependent axonal degeneration, neurotoxicity links to chronic painful small-fibre neuropathy, deficiency to acute large-fibre motor disease.
No specific diagnostic markers exist; diagnosis needs drinking history, nutritional assessment, clinical exam and electrophysiology to individualise management.

TL;DR (AI Generated)

However, current evidence suggests that alcoholic neuropathy should be regarded as a spectrum, in which these two mechanisms contribute to varying degrees and converge into a common pathogenic cascade, leading to length-dependent axonal degeneration.

Direct neurotoxicity is typically associated with chronic painful small-fiber neuropathy, whereas nutritional deficiency more often causes acute or subacute large-fiber neuropathy with motor involvement and systemic manifestations of vitamin deficiency.

Recognition of this integrated pathogenic model may facilitate the individualized diagnosis and management of alcoholic neuropathy.

Basic summary

Brain Nerve. 2026 Nov;78(11):1193-1199. doi: 10.11477/mf.188160960780111193.

ABSTRACT

Alcoholic neuropathy is one of the most common neurological complications observed in patients with alcohol use disorder. Traditionally, its pathogenesis has been debated as being either a direct neurotoxic effect of ethanol or a consequence of nutritional deficiency. However, current evidence suggests that alcoholic neuropathy should be regarded as a spectrum, in which these two mechanisms contribute to varying degrees and converge into a common pathogenic cascade, leading to length-dependent axonal degeneration. Clinical manifestations differ according to the predominant mechanism. Direct neurotoxicity is typically associated with chronic painful small-fiber neuropathy, whereas nutritional deficiency more often causes acute or subacute large-fiber neuropathy with motor involvement and systemic manifestations of vitamin deficiency. Because no disease-specific diagnostic markers exist, diagnosis requires a comprehensive evaluation of drinking history, nutritional status, clinical findings, and electrophysiological studies. Recognition of this integrated pathogenic model may facilitate the individualized diagnosis and management of alcoholic neuropathy.

PMID:43014724 | DOI:10.11477/mf.188160960780111193

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