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Smoldering encephalitis in children
Insights
This study describes a rare, persistent active viral encephalitis in children presenting with focal seizures and neurological deficits. Despite extensive investigation, no infectious agent was identified, suggesting a potentially underdiagnosed condition.
Area of Science:
- Neurology
- Pediatrics
- Infectious Diseases
Background:
- Describes a series of five children with progressive neurological deficits and focal seizures.
- Highlights the diagnostic challenges and limited treatment options for these complex pediatric cases.
Observation:
- Children presented with focal seizures and neurological deficits over months to years.
- Surgical interventions included temporal lobectomy and occipital lobectomy for seizure control and mass removal.
- Two children expired during the course of the illness.
Findings:
- Neuropathological examination revealed persistent active "viral" encephalitis in all five patients.
- No specific infectious agent was identified despite thorough investigation.
- Absence of typical systemic encephalitis signs and cerebrospinal fluid inflammatory response was noted.
Implications:
- Suggests that this form of encephalitis may be more common than previously recognized.
- This condition can lead to intractable focal seizures, hemiparesis, and deteriorating behavior in children.
- Further research is needed to identify the causative agent and develop targeted therapies for this poorly understood neurological syndrome.
Abstract:
Five children presented with focal seizures and neurological deficits that progressed over a span of months to years. Three had temporal lobectomy to control seizures, one underwent temporal lobe biopsy, and the fifth, who suffered from immunodeficiency, had an occipital lobectomy to remove a mass. Two of the children expired. Neuropathological findings in all five children were consistent with a persistent active "viral" encephalitis. No infectious agent was identified. None of the children had the usual systemic signs of encephalitis and all lacked an inflammatory response in their cerebrospinal fluid. We conjecture that this condition may be more frequent than realized. Besides causing intractable focal seizures and hemiparesis, it may account for other poorly understood syndromes of childhood with deteriorating behavior.