A Cure for Tinnitus After Tinnitus Retraining Therapy: Insights From a Large Case Series

Objectives To identify the clinical features of sensorineural tinnitus patients who achieved complete symptom resolution or "cure"after tinnitus retraining therapy (TRT) and to determine significant factors that influence tinnitus resolution duration after TRT. Methods A retrospective analysis of sensorineural tinnitus patients who underwent TRT and achieved a cure between January 2017 and January 2022 was performed. Cure of tinnitus was defined as patients experiencing symptoms for less than 5 minutes of awareness per day. Clinical information, including demographics, tinnitus duration, audiometric results, and therapeutic response, was examined. Results A total of 1,027 patients who achieved a cure for tinnitus were included, with more females (65.4%, n = 672) than males (35.6%, n = 355). The median age was 57 years (range, 12-92), with most having unilateral tinnitus (73.3%, n = 753). More than half had tinnitus with hearing loss (53.3%, n = 549), and the majority was under Jastreboff's tinnitus category 2 (38.7%, n = 397). The median duration of tinnitus before consult was 12 months in range (range, 1-480), whereas the median duration before tinnitus resolution after TRT was 17 months (range, 1-96). In Jastreboff's tinnitus categories, category 4 had the longest resolution time (median, 18 months) and category 1 the shortest (median, 15 months), but the difference was not statistically significant. A moderate correlation was observed between age and tinnitus resolution duration (Spearman correlation coefficient = 0.391, p < 0.05) and between tinnitus duration before consult and tinnitus resolution duration (Spearman correlation coefficient = 0.355, p < 0.05) Conclusion TRT seems to be a promising treatment option for patients with sensorineural tinnitus. The time to achieve this cure may range from a few months to years after TRT, indicating the heterogeneity of the mechanism and therapeutic response. The younger patients and the earlier management after the onset of tinnitus seem to be good prognostic factors for a shorter tinnitus cure time after TRT.