Tinnitus is a phantom sound perception in the ears or head and can arise from many different medical disorders. Currently, there is no standard treatment for tinnitus that reliably reduces tinnitus. Individual patients reported that acupressure at various points around the ear can help to reduce tinnitus, which was investigated here. With this longitudinal observational study, we report a systematic evaluation of auricular acupressure on 39 tinnitus sufferers, combined with a self-help

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... e app. The participants were asked to report about tinnitus, stress, mood, neck and jaw muscle tensions twice a day using an ecological momentary assessment study design for six weeks. On average, 123.6 questionnaires per person were provided and used for statistical analysis. The treatment responses of the participants were heterogeneous. On average, we ob-served significant negative trends for tinnitus loudness (Cohen’s d effect size: -.861), tinnitus dis-tress (d = -.478), stress (d = -.675), and tensions in the neck muscles (d = -.356). Comparison with a matched control group revealed significant improvements for tinnitus loudness (p = .027) and self-reported stress level (p = .003). The positive results of the observational study motivate fur-ther research including a randomized clinical trial and long-term assessment of the clinical im-provement.