Tinnitus Research Digest: Imaging, Mental Health, Physical Therapy, and Treatment Studies

This cross-sectional study enrolled 100 adults with chronic subjective tinnitus of at least six months’ duration, seen at a single tertiary otolaryngology clinic. Participants completed three validated questionnaires: the Tinnitus Handicap Inventory (THI), Beck Depression Inventory-II (BDI-II), and Beck Anxiety Inventory (BAI). Researchers examined whether tinnitus severity independently predicted psychological symptoms after adjusting for age, sex, and hearing status.

Clinically relevant depressive symptoms were identified in 28% of participants and anxiety symptoms in 31%. Tinnitus severity showed a moderate positive association with both depression (r = 0.50) and anxiety (r = 0.48). These associations held after statistical adjustment. Patients with severe tinnitus (THI score of 58 or above) had roughly three times the odds of moderate-to-severe depression compared with those with lower severity scores (OR 3.10, 95% CI 1.52–6.30), and roughly 2.8 times the odds of moderate-to-severe anxiety (OR 2.84, 95% CI 1.40–5.72).

The study’s main limitations are its single-centre design, relatively small sample of 100 participants, and cross-sectional methodology, which means causal direction cannot be established. It is unclear whether tinnitus severity drives psychological distress, whether pre-existing mental health difficulties worsen tinnitus perception, or both. Replication in larger, multi-centre samples would strengthen these findings. Routine mental health screening in ENT settings is currently inconsistent, and this study reinforces the case for integrating it into standard care.

This cross-sectional study assessed 161 patients who had already been diagnosed with somatosensory tinnitus (ST) — the subtype in which neck or jaw dysfunction influences tinnitus perception, estimated to affect roughly 25% of people with tinnitus. Participants underwent a comprehensive battery of cervical spine and temporomandibular assessments, including questionnaires, range-of-motion tests, joint repositioning accuracy tests, strength and coordination evaluations, and identification of myofascial trigger points.

Nearly all participants (95%) had at least one active myofascial trigger point in the neck muscles, and 25% had active trigger points in every tested neck muscle. Half the sample showed active trigger points in jaw muscles. Reduced cervical joint repositioning accuracy and restricted neck and jaw range of motion were common across the group. These findings suggest that ST is rarely a simple, single-dysfunction condition.

The study’s limitation is that it included only patients already diagnosed with ST and had no non-ST tinnitus comparison group, so it cannot confirm whether these dysfunctions are specific to ST or present in tinnitus patients more broadly. The heterogeneity of dysfunction patterns across participants also means no single examination finding can serve as a reliable diagnostic marker. What the data do support is that thorough multimodal physical assessment is needed, given the variability among patients. Prospective studies comparing ST and non-ST tinnitus patients would help clarify what is specific to this subtype.

This prospective longitudinal cohort study enrolled 126 patients with unilateral venous pulsatile tinnitus (VPT) and 83 matched participants without VPT. All participants underwent 4D Flow MRI and phase-contrast MR venography to assess blood flow dynamics in the transverse-sigmoid sinus (TSS), as well as high-resolution CT to assess bone erosion (petrous bone dehiscence, BD). VPT patients were followed for six months with repeat Tinnitus Handicap Inventory (THI) scoring.

Over the six-month follow-up, 74.6% of VPT patients showed symptom progression (increased THI scores). A peak flow velocity threshold of 38.79 cm/s in the TSS predicted six-month worsening with an area under the curve of 0.840 (95% CI: 0.755–0.925), meaning the model correctly classified roughly 84 out of 100 cases on average. TSS stenosis combined with hemodynamic parameters predicted VPT occurrence with an AUC of 0.895 (95% CI: 0.855–0.936). Mediation analysis indicated that bone erosion partially mediates the effect of wall shear stress on symptom severity.

Limitations include the single-centre design and the lack of a direct treatment trial; this study establishes biological predictors but does not test whether intervening at specific thresholds improves outcomes. The 6-month follow-up window is relatively short. External validation in independent cohorts is needed before these imaging thresholds could guide clinical decision-making. The study population is predominantly female and relatively young, which may limit generalisability.

This retrospective cohort study reviewed records from 113 patients with primary tinnitus at a single centre. Forty-six patients received ultrasound-guided stellate ganglion block (SGB) alone as the control group, while 67 received SGB combined with a medication regimen. Researchers compared tinnitus severity scores, quality of life across multiple domains, psychological outcomes, adverse events, and patient satisfaction between the two groups.

The combined group showed statistically greater improvements across all tinnitus severity metrics, quality-of-life domains (physical, emotional, role, cognitive, social), and psychological outcomes (anxiety, depression, stress, sleep, social support). Rates of adverse events including headache, dizziness, and nausea were similar between groups. Patient satisfaction was higher in the combined group, though fewer patients in that group reported being “very satisfied” specifically.

The study’s authors explicitly note that the retrospective observational design means only associations can be established, not causal relationships. The two groups were not randomly assigned, baseline differences not captured in the record review could confound results, and the sample sizes are modest (46 and 67 patients). The specific medications used in the combination arm are not detailed in the abstract, making it difficult to evaluate which component drives the additional benefit. A prospective randomised controlled trial is the necessary next step to determine whether this combination genuinely outperforms SGB alone and to establish the relative contributions of each treatment component.

This retrospective study analysed 175 patients with vestibular schwannoma (acoustic neuroma) treated with stereotactic radiotherapy at a single centre between 1998 and 2023. Sixty-nine patients received single-fraction radiosurgery (SRS) and 106 received normofractionated stereotactic radiotherapy (NFSRT). Median patient age was 61 years and median follow-up was 46 months. Researchers examined tumour control rates, symptom changes including tinnitus, and side-effect profiles.

Overall progression-free survival within the treated field was 94.3%. All 10 recurrences occurred in the NFSRT group, specifically in patients who received higher doses (55.8–56 Gy), and higher total dose independently predicted recurrence (hazard ratio 2.97). At baseline, 42.3% of patients reported tinnitus. After treatment, tinnitus rates remained stable across both groups. Headache incidence increased from 14.3% to 22.3% overall. Early side effects including headache, fatigue, and hair loss were more common after NFSRT but had resolved by late follow-up. Radionecrosis was rare (0.6%).

As a retrospective single-centre study with a median follow-up of 46 months, this analysis cannot fully account for selection differences between the two treatment groups, and longer follow-up would strengthen conclusions about late recurrence. The finding that higher NFSRT doses did not improve outcomes and were associated with more recurrences is noteworthy for clinical dose selection, though prospective data would be needed to confirm this.