Neuropsychiatric Manifestations of Chronic Alcoholism
Chronic alcohol misuse leads to profound neurological and psychiatric pathology, primarily due to direct neurotoxicity, nutritional deficiencies (thiamine), and neuroadaptive changes.
| Condition | Key Features |
|---|---|
| Wernicke Encephalopathy | Classic Triad: Confusion, ophthalmoplegia (nystagmus/gaze palsy), and ataxia. Requires immediate Thiamine (B1) replacement. |
| Korsakoff Syndrome | Chronic sequela of Wernicke’s; features profound anterograde/retrograde amnesia and confabulation. |
| Alcohol Withdrawal | Tremor, autonomic hyperactivity (tachycardia, hypertension), anxiety, and, in severe cases, seizures or Delirium Tremens. |
| Alcoholic Cerebellar Degeneration | Atrophy of the cerebellar vermis manifests as wide-based gait and trunk ataxia. |
High-Yield Clinical Notes:
- Medical Emergency: Never administer glucose before thiamine in a malnourished patient suspected of alcohol abuse, as it can precipitate Wernicke Encephalopathy.
- Delirium Tremens (DTs): Medical emergency peaking at 48–96 hours post-cessation. Features severe agitation, hallucinations, and autonomic instability. Managed with benzodiazepines.
- Cognitive Effects: Chronic use is associated with frontal lobe executive dysfunction, affecting planning, judgment, and impulse control.