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Modeling Multiple Sclerosis in the Two Sexes: MOG35-55-Induced Experimental Autoimmune Encephalomyelitis

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Pediatric multiple sclerosis in Venezuela.

Joaquín A Peña¹, María Elena Ravelo, Evelio Rubio

¹Pediatrics Department, School of Medicine, University of Zulia, Maracaibo, Venezuela. juaco949@hotmail.com

Arquivos De Neuro-Psiquiatria

|April 19, 2012

Summary

Pediatric multiple sclerosis (MS) in Venezuela shows a significant prevalence, with most children experiencing motor symptoms and a relapsing-remitting pattern. This study offers the first comprehensive look at childhood MS cases in the region.

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Area of Science:

Neurology
Epidemiology
Pediatrics

Background:

Multiple sclerosis (MS) is a chronic autoimmune disease affecting the central nervous system.
Pediatric MS (pMS) represents a unique subset with distinct epidemiological and clinical features.
Understanding pMS in different geographic regions is crucial for diagnosis and management.

Purpose of the Study:

To characterize the epidemiological and clinical profiles of pediatric patients diagnosed with multiple sclerosis in Venezuela.
To establish the prevalence of childhood-onset MS within the Venezuelan national MS database.
To provide the first systematic analysis of pediatric MS in Venezuela.

Main Methods:

Retrospective analysis of the National Program for MS database in Venezuela.
Inclusion criteria: patients with an established MS diagnosis and symptom onset before 18 years of age.
Data extraction focused on demographic, clinical presentation, and disease course characteristics.

Main Results:

Out of 1,710 MS patients, 3.8% had onset before age 18.
The female-to-male ratio was 1.13:1 (46.7% boys).
Common initial symptoms included motor impairment (30.7%), brainstem/cerebellum or spinal cord involvement (27.6%), and headache (26%). Less frequent were sensory symptoms (8%) and optic neuritis (7%).

Conclusions:

Pediatric MS constitutes a notable proportion of all MS cases in Venezuela.
The typical clinical presentation involves motor symptoms at onset and a predominantly monosymptomatic, relapsing-remitting course.
This study represents the inaugural systematic effort to quantify pediatric MS prevalence in Venezuela.