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Updated: Aug 14, 2026

Induction and Clinical Scoring of Chronic-Relapsing Experimental Autoimmune Encephalomyelitis
Published on: July 4, 2007
Subtle encephalomyelitis in children: a variant of acute disseminated encephalomyelitis
S D Johnsen1, A D Sidell, C R Bird
1Section of Child Neurology, Barrow Neurological Institute, St. Joseph's Hospital, Phoenix, AZ 85013-4476.
Abstract:
Four children with chronic, mild, nonspecific symptoms are described in whom magnetic resonance imaging (MRI) showed the presence of multifocal white-matter lesions suggestive of acute disseminated encephalomyelitis. The children ranged in age from 14 months to 15 years. The clinical picture was vague and inconclusive and consisted of several months of headaches, irritability, clumsiness, and personality change. Physical examinations were noncontributory. Laboratory investigation revealed no other cause of the demyelination. All of the patients have done well without any treatment, with a disappearance of symptomatology. The white-matter lesions on MRI scan in these children may indicate subtle exposure to a myelinolytic antigen. It has been suggested that such an exposure may create a state of complete or partial resistance to the encephalitogenic potential of the next infection or immunization. With complete resistance, the patient remains healthy and with partial resistance progressive demyelination results. Verification of these findings by others would suggest a possible benefit of a multicenter study of such patients, with virological, HLA testing, and long-term follow-up, in understanding the etiopathogenesis of multiple sclerosis.
Insights
Four children with unexplained neurological symptoms showed white-matter lesions on MRI, suggesting acute disseminated encephalomyelitis. These cases resolved spontaneously, offering insights into demyelinating diseases.
Area of Science:
- Neurology
- Pediatrics
- Radiology
Background:
- Describes four pediatric cases with chronic, mild, nonspecific neurological symptoms.
- Symptoms included headaches, irritability, clumsiness, and personality changes over several months.
Observation:
- Magnetic resonance imaging (MRI) revealed multifocal white-matter lesions suggestive of acute disseminated encephalomyelitis.
- Physical examinations and laboratory investigations did not identify other causes for demyelination.
Findings:
- All four children recovered spontaneously without specific treatment, with complete resolution of symptoms.
- The white-matter lesions may indicate exposure to a subtle myelinolytic antigen.
Implications:
- This exposure might confer resistance to subsequent infections or immunizations, potentially explaining varied disease progression.
- Further multicenter studies are recommended to explore the etiopathogenesis of multiple sclerosis and similar demyelinating conditions.
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