Summary of neurological complications in cirrhosis: presentation, diagnostics, and contemporary management.
| Neurological complication | Primary pathophysiology | Key clinical presentation | Diagnostic approach | Contemporary management | Key references |
|---|---|---|---|---|---|
| Hepatic encephalopathy | NH3 toxicity, neuroinflammation, astrocyte swelling. | Cognitive decline, asterixis, altered consciousness, sleep inversion. | Clinical grading (West Haven), psychometric tests, EEG. | Lactulose, rifaximin, LOLA, BCAAs. | [11, 13, 14, 27, 28, 37, 44, 45, 48] |
| Acquired hepatocerebral degeneration | Mn accumulation in basal ganglia, dopaminergic dysfunction. | Parkinsonism, ataxia, choreoathetosis, intention tremor. | Brain MRI (T1-hyperintensity in globus pallidus), blood Mn. | Liver transplantation; BRTO. | [5, 66, 68, 69, 72, 77] |
| Hepatic myelopathy | Portosystemic shunting, demyelination of corticospinal tracts. | Progressive spastic paraparesis, hyperreflexia, minimal sensory loss. | Spinal MRI (rule out compression), EMG/nerve conduction. | Liver transplantation (early stage); often refractory to standard HE therapies. | [4, 97–100, 103, 104, 107, 108] |
| Peripheral neuropathy | Toxins (alcohol), metabolic derangement, viral (HCV) cryoglobulinemia. | Sensorimotor deficits, paresthesias, areflexia, dysautonomia. | Nerve conduction studies, autonomic reflex testing (CARTs). | Etiology-specific (e.g., DAAs for HCV, alcohol cessation), gabapentinoids. | [50, 114–117, 119, 120, 123, 124, 128] |
| Cerebrovascular complications | Precarious rebalanced hemostasis, accelerated atherosclerosis, endothelial dysfunction. | Focal neurological deficits, signs of ICH or ischemic stroke. | Brain CT/MRI. Avoid relying solely on standard PT/INR. | Risk-benefit individualized; DOACs for AF (Child A/B only); avoid 4F-PCC. | [15, 16, 136, 144] |
| Neuroinfections | Cirrhosis-associated immune dysfunction (CAID), bacterial translocation. | Refractory HE, frequently absent fever/nuchal rigidity. | Early LP, multiplex PCR, CSF galactomannan; CLIF-SOFA screening. | Broad-spectrum antibiotics tailored to local MDROs, targeted antifungals. | [145–148, 151–154] |
| Sleep & neuromotor disorders | Delayed melatonin clearance, iron/hepcidin dysregulation, energy depletion. | Severe insomnia, excessive daytime sleepiness, RLS, muscle cramps. | PSQI, actigraphy, clinical history, polysomnography. | Light therapy (sleep); baclofen, L-carnitine, pickle juice (cramps); dopamine agonists (RLS). | [18–20, 23, 168, 170–173, 175, 176] |
4F-PCC: four-factor prothrombin complex concentrate; AF: atrial fibrillation; BCAAs: branched-chain amino acids; BRTO: balloon-occluded retrograde transvenous obliteration; CARTs: cardiovascular autonomic reflex tests; CLIF-SOFA: Chronic Liver Failure-Sequential Organ Failure Assessment; CSF: cerebrospinal fluid; CT: computed tomography; DAAs: direct-acting antivirals; DOACs: direct oral anticoagulants; EEG: electroencephalogram; EMG: electromyography; HCV: hepatitis C virus; HE: hepatic encephalopathy; ICH: intracranial hemorrhage; INR: international normalized ratio; LOLA: L-ornithine-L-aspartate; MDROs: multidrug-resistant organisms; Mn: manganese; MRI: magnetic resonance imaging; NH3: ammonia; PCR: polymerase chain reaction; PSQI: Pittsburgh Sleep Quality Index; PT: prothrombin time; RLS: restless legs syndrome.
LEFG: Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Project administration, Software, Supervision, Validation, Visualization, Writing—review & editing. VAFG: Data curation, Investigation, Software, Validation, Visualization, Writing—original draft. LAGT: Conceptualization, Data curation, Investigation, Methodology, Validation, Writing—original draft. AAPG: Data curation, Investigation, Software, Visualization, Writing—original draft. SBH: Data curation, Investigation, Software, Visualization, Writing—original draft. HCM: Data curation, Investigation, Software, Visualization, Writing—original draft. IEB: Data curation, Formal analysis, Visualization, Validation, Writing—review & editing. CACH: Data curation, Formal analysis, Visualization, Validation, Writing—review & editing. RPNQ: Data curation, Investigation, Software, Visualization, Writing—original draft. ANR: Data curation, Investigation, Software, Visualization, Writing—original draft. All authors read and approved the submitted version.
The authors declare that they have no conflicts of interest.
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