الملخص
@#Objective To explore the differences in tremor characteristics between patients with primary Parkinson's disease(IPD),essential tremor(ET),and Parkinson's disease developed from essential tremor(ET-PD).Method Thirty IPD patients,30 ETs,and 20 ET-PD patients were included,and the frequency,contraction pattern,and presence of harmonics of static and postural tremors were compared among the three groups.Results There were statistically significant differences(P<0.01)among the IPD group,ET group,and ET-PD group in terms of age of onset,disease course,and the unified Parkinson's disease rating scale(UPDRS)score.There were statistically significant differences(P<0.05)in the average frequency of stationary tremors,average frequency of postural tremors,rate of alternating tremors in stationary state,rate of alternating tremors in postural state,and rate of harmonic occurrence in stationary state among the IPD group,ET group,and ET-PD group,as well as in the rate of harmonic occurrence in postural state(P<0.05).Conclusion The IPD group,ET group,and ET-PD group each have significant differences in tremor characteristics.The ET-PD group has both characteristics and uniqueness,and tremor analysis can help identify this disease.