Chronic Neurologic Effects of Alcohol

Clin Liver Dis. 2019 Feb;23(1):141-155. doi: 10.1016/j.cld.2018.09.010.

Abstract

Chronic alcohol use induces silent changes in the structure and function of the central and peripheral nervous systems that eventually result in irreversible, debilitating repercussions. Once identified, nutritional supplementation and cessation measures are critical in preventing further neurologic damage. The proposed mechanisms of neuronal injury in chronic alcohol abuse include direct toxic effects of alcohol and indirect effects, including those resulting from hepatic dysfunction, nutritional deficiencies, and neuroinflammation. Clinical manifestations include cerebellar ataxia, peripheral neuropathy and Wernicke-Korsakoff encephalopathy. Continued exploration of the pathophysiologic mechanisms may lead to the discovery of early interventions that can prevent permanent neurologic injury.

Keywords: Alcohol; Alcoholic neuropathy; Ataxia; Cerebellar degeneration; Complications; Wernicke-Korsakoff encephalopathy.

Publication types

  • Review

MeSH terms

  • Alcohol-Induced Disorders, Nervous System / etiology
  • Alcohol-Induced Disorders, Nervous System / metabolism
  • Alcohol-Induced Disorders, Nervous System / physiopathology*
  • Alcohol-Induced Disorders, Nervous System / psychology
  • Alcohol-Related Disorders / metabolism
  • Alcohol-Related Disorders / physiopathology
  • Alcohol-Related Disorders / psychology
  • Alcoholic Korsakoff Syndrome / etiology
  • Alcoholic Korsakoff Syndrome / metabolism
  • Alcoholic Korsakoff Syndrome / physiopathology
  • Alcoholic Korsakoff Syndrome / psychology
  • Alcoholic Neuropathy / etiology
  • Alcoholic Neuropathy / metabolism
  • Alcoholic Neuropathy / physiopathology
  • Alcoholism / complications
  • Alcoholism / metabolism
  • Alcoholism / physiopathology*
  • Alcoholism / psychology
  • Cerebellar Ataxia / etiology
  • Cerebellar Ataxia / metabolism
  • Cerebellar Ataxia / physiopathology
  • Humans
  • Neurotransmitter Agents / metabolism

Substances

  • Neurotransmitter Agents