A 2 year old child ( baby girl) having HX of high grade fever ( 102 - 103 F )last 2 weeks , no hx of any GI , urinary illness , , denies any shivering,blood work result ;unremarkable , except ESR 62 initially , and after a week ESR rises 129 ,lab results excludes typhoid , malaria , TB , meningitis, , abcess , pneumonia UTI , inflammatory bowel disease, . only on Echocardiography , mild changes abnormalities identified and , it was diagnosed that the child is having Kawasaki disease , even after given iimmunoglobulin twice fever has not settled ,and ESR is further in rising state, , .what would be themanagement and might be actual diagnosis is missing or not like tuberculosis . plz suggest your expert openion