30 mg/kg/dose (Max: 1 gram/dose) IV or IM once daily for 1 to 3 days. High-dose pulse steroids may be considered as an alternative to a second infusion of IVIG or for retreatment of patients who have had recurrent or recrudescent fever after additional IVIG, but should not be used as routine primary therapy with IVIG in patients with Kawasaki disease. Corticosteroid treatment has been shown to shorten the duration of fever in patients with IVIG-refractory Kawasaki disease or patients at high risk for IVIG-refractory disease. A reduction in the frequency and severity of coronary artery lesions has also been reported with pulse dose methylprednisolone treatment.
An acute myopathy has been observed with the use of high doses of corticosteroids, most often occurring in patients with disorders of neuromuscular transmission (., myasthenia gravis ), or in patients receiving concomitant therapy with neuromuscular blocking drugs (., pancuronium). This acute myopathy is generalized, may involve ocular and respiratory muscles, and may result in quadriparesis . Elevations of creatine kinase may occur. Clinical improvement or recovery after stopping corticosteroids may require weeks to years.