Abstract: Objective To investigate the related factors of hemichorea.Methods 15 patients with hemichorea were analyzed retrospectively,including their clinical features,characteristics of neuroimaging and treatment.They were followed up for 0.5～4 years.Results The serum glucose increase in 11 cases.The lacunar cerebral infarctions in the area of basal ganglion were found in 5 patients,and the microvessel lesions in the area of basal ganglion resulted from diabetes mellitus in 10 patients.13 patients accepted medicine treatment,11 cases improved,1 case was ineffective,1 case deteriorated.Conclusion The hemichorea mainly related with cerebrovascular disease.The hemichorea due to diabetes mellitus may related with the ischemic or hemorrhagic microvessel lesions.

Key words: hemichorea, diabetes mellitus, cerebrovascular disease, microangiopathy