The effect of Kawasaki disease on cognition and behavior

Objective: To determine whether there are associated long-term deficits in the cognitive, academic, or behavioral outcomes of children with a previous episode of Kawasaki disease. Design: Cohort analytic study. Setting: A tertiary care pediatric hospital in Ottawa, Ontario. Participants: Thirty-two patients with a past diagnosis of Kawasaki disease . Siblings of the patients with Kawasaki disease were eligible to be contro ls. Measures: A blinded psychometrist (Y.K.) assessed cognition by the appropri ate Wechsler Intelligence scale, academic achievement by the Wechsler Indiv idual Achievement Test, and behavior by the Achenbach Child Behavior Checkl ist. Results: No differences were found in cognitive or academic measures and th e mean scores corresponded closely to national norms. Parents rated their c hildren who had Kawasaki disease as having significantly more internalizing (P<.03) and attentional (P<.02) behavior problems than controls; the risk of a clinically significant behavioral score was 3.3 times greater (P<.03; 95% confidence interval, 1.1-9.9) than for sibling controls. Conclusions: While no effect on cognitive development or academic performan ce was demonstrated, these results provide preliminary indication of a post -Kawasaki disease deficit in internalizing and attentional behavior.