Kawasaki disease (KD) is an acute vasculitis of unknown aetiology with varied clinical manifestations. Although coronary arteritis is common in the course of KD, central nervous system involvement is rare. We report a case of KD in an infant who developed convulsions and apnoea during his illness associated with syndrome of inappropriate secretion of antidiuretic hormone (SIADH).
Conclusion: The possibility of severe hyponatraemia should be anticipated in children with KD. Infants with KD are at risk of SIADH and should be monitored closely for its development.