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Updated: Aug 6, 2026

Induction and Clinical Scoring of Chronic-Relapsing Experimental Autoimmune Encephalomyelitis
Published on: July 4, 2007
[Acute disseminated encephalomyelitis (ADEM): report of a clinical case]
Chiara Locatelli1, Roberta Ciambra, Manuela Pasini
1U.O. Pediatria, Ospedale Maurizio Bufalini, Cesena. mpocecco@ausl-cesena.emr.it
Abstract:
Acute disseminated encephalomyelitis (ADEM) is a rare acute inflammatory demyelinating disorder of central nervous system characterized by multifocal white matter involvement. Children and young adults are more commonly affected. The onset of ADEM usually follows a viral infection or immunization after a mean period of 7-14 days. The pathogenesis is not clear but several evidences support the autommune aetiology. ADEM is characterized by multifocal neurological signs and occasionally it rapidly progresses to coma. Magnetic resonance imaging (MRI) is useful to confirm the diagnosis. Treatment is based on intravenous high dose methylprednisolone, which usually leads a rapid improvement. Recently the use of i.v. immunoglobulins has also been suggested. We report a case of a 2-year-old girl with sudden onset of neurological symptoms (irritability, drowsiness, hemiparesis, ataxia, strabismus) after an upper respiratory tract infection. MRI showed the presence of multiple high signal areas in the brain and in the spinal cord. High doses of methylprednisolone (10 mg/Kg) i.v. determined a rapid and persistent improvement of neurological signs and symptoms.
Insights
Acute disseminated encephalomyelitis (ADEM) is a rare inflammatory brain disorder. Prompt treatment with high-dose methylprednisolone rapidly improved a child's neurological symptoms, highlighting effective ADEM management.
Area of Science:
- Neurology
- Immunology
- Pediatrics
Background:
- Acute disseminated encephalomyelitis (ADEM) is a rare, multifocal inflammatory demyelinating disorder of the central nervous system.
- It primarily affects children and young adults, often triggered by viral infections or immunizations.
- The exact pathogenesis remains unclear, but autoimmune mechanisms are strongly suspected.
Observation:
- A 2-year-old girl presented with acute neurological symptoms including irritability, drowsiness, hemiparesis, ataxia, and strabismus following an upper respiratory tract infection.
- Magnetic Resonance Imaging (MRI) revealed multiple high signal lesions in both the brain and spinal cord, consistent with ADEM.
- The patient experienced a rapid and sustained recovery after receiving intravenous high-dose methylprednisolone.
Findings:
- Intravenous high-dose methylprednisolone (10 mg/Kg) was effective in treating ADEM in a pediatric patient.
- The treatment resulted in a rapid and persistent improvement of neurological signs and symptoms.
- MRI is a crucial diagnostic tool for identifying the characteristic multifocal white matter lesions of ADEM.
Implications:
- Early diagnosis and prompt treatment with high-dose corticosteroids are critical for favorable outcomes in pediatric ADEM.
- This case supports the efficacy of methylprednisolone as a primary treatment for ADEM.
- Further research into ADEM pathogenesis may reveal new therapeutic targets, potentially including immunomodulatory agents.
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