Cognitive Functioning in Pediatric-Onset Multiple Sclerosis

Pediatric-onset multiple sclerosis (POMS) is a chronic immune-mediated condition characterised by demyelination and neurodegeneration occurring during critical stages of brain development. Children and adolescents with POMS frequently exhibit impairments in attention, processing speed, executive functions, visuospatial skills and memory. A younger age at disease onset, higher relapse frequency and greater lesion burden contribute to cognitive vulnerability, as inflammatory injury disrupts myelination and synaptic maturation. Longitudinal studies have demonstrated that failure of age-expected white and grey matter growth further exacerbates deficits, with detrimental effects on academic achievement, social integration and quality of life. Early recognition through neuropsychological screening and multimodal imaging is essential to tailor interventions. Combining disease-modifying therapies with targeted cognitive rehabilitation holds promise for preserving neurocognitive trajectories. Efforts to harmonise assessment protocols and to identify biomarkers of resilience are under way to inform global clinical guidelines and optimise long-term outcomes for young people with POMS.

Research from Nature Portfolio

Recent work has applied baseline cognitive evaluations to early-onset cohorts, revealing that poorer performance in specific subdomains such as visual memory and information processing speed at diagnosis predicts both relapse occurrence and motor disability accrual over follow-up periods of up to seven years. These findings highlight the prognostic value of targeted neuropsychological testing and suggest that early deficits may serve as clinical markers to guide timely escalation of therapeutic interventions. Focused analyses of attention and memory measures have demonstrated stronger associations with long-term outcomes than global cognitive scores, underscoring the utility of subdomain profiling in risk stratification.

Cognitive Functioning in Pediatric-Onset Multiple Sclerosis publication trend

The graph below shows the total number of articles in cognitive functioning in pediatric-onset multiple sclerosis across all publications each year (not limited to Nature Index journals).

Technical terms

Cognitive impairment: A reduction in mental functions such as attention, memory, processing speed and executive control.

Processing speed: The rate at which an individual perceives, interprets and responds to information.

Fractional anisotropy (FA): A diffusion MRI metric reflecting the directional coherence of water movement in white matter tracts.

Relapse: A clinical episode of new or worsening neurological symptoms in multiple sclerosis.

Default-mode network (DMN): A set of interconnected brain regions active during rest and involved in self-referential processing.

Neuropsychological assessment: A battery of tests designed to evaluate cognitive domains and detect subclinical deficits.

References

1. The State of the Art of Pediatric Multiple Sclerosis. International Journal of Molecular Sciences (2023).
2. Academic outcomes before and after clinical onset of acquired demyelinating syndromes in children: a matched cohort data linkage study. Annals of Clinical and Translational Neurology (2024).
3. Associations between cognitive impairment at onset and disability accrual in young people with multiple sclerosis. Scientific Reports (2019).
4. Alterations in Functional and Structural Connectivity in Pediatric-Onset Multiple Sclerosis. PLOS ONE (2016).
5. Cognitive deficits including executive functioning in relation to clinical parameters in paediatric MS patients. PLOS ONE (2018).