This study aimed to assess the extent of cognitive impairment in children and adolescents with Juvenile Idiopathic Arthritis (JIA). While cognitive deficits are recognized in other systemic rheumatic diseases, exploration within the pediatric JIA population remains limited. The investigation utilized a comprehensive approach to examine neuropsychological test performance. A cohort of 160 participants (79 JIA, 81 healthy controls aged 8-17) underwent evaluations using the Pediatric Quality of Life Inventory (PedsQL), Schedule for Affective Disorders and Schizophrenia for School Age Children-Present and Lifetime Version (K-SADS-PL), and the computerized neurocognitive test battery Central Nervous System Vital Signs (CNSVS). Children with JIA exhibited statistically significant cognitive deficits across various parameters (p < .05). This was associated with an increased prevalence of lifelong psychiatric illnesses and diminished overall quality of life compared to healthy counterparts (p < .05). Analysis highlighted that specific JIA subtypes, excluding Oligoarthritis, significantly elevated the risk of neurocognitive impairments, emphasizing the impact on various cognitive outcomes (OR range: 3.1-5.1, 95% CI: 1.163-19.980). Additionally, the active disease stage was identified as a specific risk factor, amplifying the likelihood of low executive functions by 4.3 times (OR: 4.363, 95% CI: 1.095-17.378). This study underscores the critical importance of recognizing and addressing neurocognitive impairments in children with JIA. Specific attention to disease subtypes and activity levels is crucial, with the potential for targeted interventions to enhance overall cognitive well-being and quality of life in this vulnerable population.
Keywords: Juvenile idiopathic arthritis; cognitive impairment; neuropsychological functioning; psychiatric comorbidity; quality of life.