The age distribution for the different etiologies is summarized in Table 1. In the autoimmune group, significantly more children were >10 years of age (87.5%) compared to the other age groups (p < 0.01). In this group, 76.9% suffered from systemic erythematous lupus. There were significantly more infants (68.0%) in the miscellaneous group (p < 0.01), 76.4% of whom were diagnosed with KD.