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Handwriting Analysis Indicates Spontaneous Dyskinesias in Neuroleptic Naïve Adolescents at High Risk for Psychosis

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Structural brain abnormalities in early onset first-episode psychosis.

A K Pagsberg¹, W F C Baaré, A M Raabjerg Christensen

¹Department of Child and Adolescent Psychiatry, Copenhagen University Hospital Bispebjerg, Copenhagen, Denmark. kp04@bbh.hosp.dk

Journal of Neural Transmission (Vienna, Austria : 1996)

|October 7, 2006

Summary

Early brain changes in young psychosis patients show white matter abnormalities and enlarged ventricles, suggesting neurodevelopmental issues. Gray matter volume changes were not a key feature in this first-episode psychosis study.

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Area of Science:

Neuroscience
Psychiatry
Radiology

Background:

First-episode psychosis in children and adolescents presents a critical window for understanding disease origins.
Investigating brain structure in early psychosis is crucial for identifying neurodevelopmental trajectories.

Purpose of the Study:

To investigate brain morphometry in pediatric and adolescent patients experiencing their first episode of psychosis.
To compare brain structure between patients with first-episode psychosis and healthy controls.

Main Methods:

Utilized high-resolution 3D T1-weighted magnetic resonance imaging (MRI) for brain scans.
Employed optimized voxel-based morphometry (VBM) to analyze structural differences.
Compared 29 patients (aged 10-18) with various psychotic disorders against 29 matched controls.

Main Results:

Observed frontal white matter abnormalities in patients with first-episode psychosis.
Found significantly larger lateral ventricles in schizophrenia patients compared to controls.
Identified a negative correlation between antipsychotic medication duration/dose and global gray matter volume in minimally medicated patients.

Conclusions:

White matter changes and enlarged lateral ventricles at illness onset suggest aberrant neurodevelopment in schizophrenia spectrum disorders.
Gray matter volume reductions do not appear to be a primary characteristic of early-onset first-episode psychosis.
Findings highlight the importance of neurodevelopmental factors in the pathogenesis of early psychosis.