Objective:To compare the efficacy and safety of first-line treatment of adult immune thrombocyto- penia(ITP)with high-dose dexamethasone(Dex)and conventional-dose prednisone(Pred).Method:A total of 87 cases of adult ITP were randomly divided into group A(n=42)and group B(n=45).Patients in group A received high-dose Dex therapy,patients in group B received conventional doses of Pred treatment and then given large do- ses Dex treatment if no response.We compared the efficacy and safety of two kinds of treatme...