Sleep and its relationship to pain, dysfunction, and disease activity in juvenile rheumatoid arthritis.

Abstract

OBJECTIVE: To determine what sleep abnormalities may exist in children with juvenile rheumatoid arthritis (JRA). and their relationship to pain, dysfunction. and disease activity. METHODS: Twenty-five children with active JRA (11 pauciarticular, 9 polyarticular, 5 systemic) had their sleep assessed by parallel, validated patient and parent questionnaires (Sleep Self-Report, SSR, and Children's Sleep Habits Questionnaire, CSHQ). Disease activity was assessed by parent and physician global assessments (on a 5 point scale: 0 = no disease activity to 4 = very severe disease), erythrocyte sedimentation rate (ESR), and numbers of swollen and limited joints. Functional assessment was based on parental completion of the Juvenile Arthritis Functional Assessment Report (JAFAR). Pain was assessed by the average pain visual analog scale of the Varni Pediatric Pain Questionnaire. Results were compared to those from 45 healthy age and sex matched controls by Mann-Whitney U tests, and correlated with variables of JRA disease activity, function, and pain using Spearman correlations. RESULTS: Patients with JRA had higher total score on the CSHQ (p < 0.0001), as well as subscales assessing night wakings, parasomnias. sleep anxiety, sleep-disordered breathing, and morning wakening/daytime sleepiness (p < 0.0001-0.05). There were no correlations between CSHQ scores and JRA disease activity or pain variables, but the total score on the SSR did correlate with pain (r = 0.56, p = 0.005). CONCLUSION: We conclude that sleep abnormalities are common in children with JRA, and are multi-dimensional.

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