Related Experiment Video
Updated: Jul 7, 2026

Detection of Polyfunctional T Cells in Children Vaccinated with Japanese Encephalitis Vaccine via the Flow Cytometry Technique
Published on: September 23, 2022
Disseminated encephalomyelitis in children
1Department of Neurology, National Paediatric Hospital Dr. J. P. Garrahan, Buenos Aires, Argentina. silviatenembaum@hotmail.com
Abstract:
The advent of MRI has contributed to increase the interest and awareness in childhood white matter disorders. A major priority is to distinguish transient and self-limited demyelinating syndromes like disseminated encephalomyelitis (DEM), from life-long diseases like multiple sclerosis (MS). However, the term DEM has been inconsistently applied across studies due to the lack of clear clinical and neuroimaging diagnostic criteria. The present review summarizes the available literature on DEM in children, outlines the main clinical and neuroimaging features at presentation, pathogenesis and outcome, and its differentiation from other conditions with acute impact in the CNS. The recently proposed clinical definitions for monophasic disseminated encephalomyelitis and its relapsing variants are discussed, and controversies surrounding the diagnosis of MS in children are addressed.
Insights
Disseminated encephalomyelitis (DEM) in children is often confused with multiple sclerosis (MS). This review clarifies diagnostic criteria for DEM, differentiating it from MS and other acute central nervous system conditions.
Area of Science:
- Neurology
- Pediatrics
- Neuroimaging
Background:
- Magnetic Resonance Imaging (MRI) has increased focus on childhood white matter disorders.
- Distinguishing self-limited demyelinating syndromes like disseminated encephalomyelitis (DEM) from chronic conditions like multiple sclerosis (MS) is a clinical priority.
- Inconsistent application of the term DEM stems from a lack of clear diagnostic criteria.
Purpose of the Study:
- To review the literature on childhood DEM.
- To outline clinical and neuroimaging features, pathogenesis, and outcomes of DEM.
- To differentiate DEM from other acute central nervous system (CNS) conditions and address MS diagnosis controversies in children.
Main Methods:
- Literature review of childhood disseminated encephalomyelitis (DEM).
- Analysis of clinical and neuroimaging presentations, pathogenesis, and outcomes.
- Comparison with multiple sclerosis (MS) and other acute CNS conditions.
Main Results:
- The review synthesizes current knowledge on DEM in children.
- Key clinical and neuroimaging features are presented.
- Recently proposed definitions for monophasic and relapsing DEM are discussed.
Conclusions:
- Clear diagnostic criteria are needed to consistently define and diagnose DEM in children.
- Differentiating DEM from MS and other acute CNS conditions is crucial for appropriate management and prognosis.
- Further research is needed to refine diagnostic criteria and understand the long-term outcomes of childhood demyelinating disorders.
Related Concept Videos
Encephalitis l: Introduction
Encephalitis ll: Pathophysiology
Poliomyelitis
Arboviral Encephalitis
Viral Meningitis
Rocky Mountain Spotted Fever

