BACKGROUND: The aim of this study was to investigate the superiority of the effects of manual acupuncture (MA), electroacupuncture (EA), or transcutaneous electrical nerve stimulation (TENS) on chronic consecutive tinnitus. METHODS: Forty-five patients with chronic consecutive tinnitus were allocated into an MA, an EA, or a TENS group at a 1:1:1 ratio. The corresponding patients were treated with MA, EA, or TENS twice a week for 10 sessions (5 weeks). The primary outcome was a change in the tinnitus handicap inventory (THI), and the secondary outcomes were loudness and annoyance of tinnitus, pure-tone audiometry (PTA), and the speech discrimination test. The outcome measures were obtained at baseline, visit 5 (week 3), visit 10 (week 5), and visit 11 (follow-up 4 weeks). RESULTS: Of the 45 participants, 37 (82.22%) completed the study. There was no difference in the THI score change among the groups at any point. However, the number of participants who had reduced scores of more than 10 points was higher in the EA group than in the TENS or MA groups (p = 0.037, Fisher's exact test). There was no significant difference in the loudness and annoyance of tinnitus, PTA, and speech discrimination test findings among the groups. CONCLUSION: Among the MA, EA, and TENS groups, there was no significant difference in the effects on the treatment of chronic consecutive tinnitus. However, EA could respond to more patients. TRIAL REGISTRATION: Registered on October 21, 2016 (KCT0002117 by CRIS).

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