Immune mediated chorea encephalopathy syndrome in childhood

L M Hartley1, S Y Ng, R C Dale

  • 1Department of Neurology, Great Ormond Street Hospital for Children NHS Trust, and Institute of Child Health, London, UK.

Insights

Four young girls developed encephalopathy and movement disorders. Investigations were normal, but cerebrospinal fluid showed immune markers, suggesting an immune-mediated syndrome with full recovery.

Area of Science:

  • Pediatric Neurology
  • Neuroimmunology
  • Movement Disorders

Background:

  • Encephalopathy and movement disorders can have diverse etiologies in children.
  • Differentiating immune-mediated conditions from other causes is crucial for timely diagnosis and treatment.

Observation:

  • Four previously healthy female children (3-8 years) presented with encephalopathy and extrapyramidal movement disorders (chorea, rigidity, oculogyric crisis).
  • Symptoms included behavioral disturbances, mutism, and seizures.
  • Initial MRI scans were normal or showed delayed generalized cerebral atrophy.

Findings:

  • All infective, biochemical, and metabolic investigations were unremarkable.
  • Cerebrospinal fluid (CSF) analysis revealed oligoclonal bands, indicating intrathecal immunoglobulin synthesis.
  • All patients achieved a full clinical recovery within four months.

Implications:

  • The findings suggest a distinct immune-mediated movement disorder and encephalopathy syndrome in children.
  • This syndrome may be characterized by specific neurological and CSF findings.
  • Early recognition and potential immunomodulatory treatment could lead to favorable outcomes.

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