OBJECTIVETo investigate the clinical features of children with incomplete Kawasaki disease (IKD), and to provide reference for the early diagnosis of IKD.

METHODSThe clinical data of 22 hospitalized children with IKD were analyzed retrospectively and compared with the data of 63 children with Kawasaki disease (KD) who were hospitalized during the same period of time. Another 20 children with pyrexia were enrolled as the control group.

RESULTSPyrexia was observed in all children. Compared with the KD group, the IKD group had significantly lower proportions of children with changes in the limbs, conjunctival hyperaemia, and cervical lymphadenectasis (P<0.05), a significantly higher serum level of glutamic-pyruvic transaminase (P<0.05), and significantly lower levels of plasma albumin, serum sodium, and interleukin-6 (P<0.05). There was no significant difference in the rate of γ-globulin application between the IKD and KD groups; however, the IKD group had a significantly higher incidence rate of coronary artery lesion than the KD group (P<0.05).

CONCLUSIONSThe symptoms and signs in children with IKD are untypical. The liver function test and serum hyponatremia and IL-6 measurements may be useful for the diagnosis of IKD.