This study aims to evaluate the efficacy of rTMS on DITS. Twenty patients with DITS were recruited from the outpatient clinic of Aswan University Hospital. The patients were classified into two equal groups, 1st group received real high frequency rTMS at 100% RMT and the 2nd group received sham stimulation with the same pulse delivery but with the coil placed perpendicular to the scalp. For each patient 10 sessions were administered once per day for 5 consecutive days each week for two weeks. All patients were assessed before rTMS and immediately after the end of the 10 sessions. This study is double blinded (the doctor and the patients). Assessment with AIMS scale and different parameters of cortical excitability were performed before and after the end of sessions treatment.