New Treatment for Dementia Trial

For many, tinnitus is more than a sound. It’s a physical sensation. Sixty-five adults with a specific form of this condition are needed for a new trial that will compare two common treatment approaches, and their combination, for the first time. The three-arm randomized controlled trial, registered as NCT07740954, will determine if physical manipulation, sound-based therapy, or a blend of both offers the best relief for somatosensory tinnitus.

A direct comparison for a physical form of tinnitus

Somatosensory tinnitus describes a subtype where the perceived sound can be changed by physical maneuvers. Patients may notice their tinnitus intensifies or quiets with movements of the head, neck, or jaw, or with pressure on certain muscles. This strong link to the musculoskeletal system has led to the use of two distinct treatment paths. Manual Therapy (MT) uses physical techniques to address cervical and jaw dysfunctions. Tinnitus Retraining Therapy (TRT) combines sound therapy and counseling to help the brain habituate to the tinnitus signal. Clinicians and patients often choose one approach or combine them based on limited evidence. This trial, titled “COMPARISON OF MANUAL THERAPY, TINNITUS RETRAINING THERAPY, AND COMBINED THERAPY IN PATIENTS WITH SOMATOSENSORY TINNITUS,” aims to create that evidence.

Study design and what participation entails

The trial is structured as a parallel-group, randomized controlled trial. Participants will be randomly assigned to one of three groups: Manual Therapy alone, Tinnitus Retraining Therapy alone, or a Combined Therapy group receiving both treatments. The intervention period lasts six weeks, with outcomes measured immediately before and after.

Manual Therapy will focus on the cervical spine and temporomandibular region, likely involving techniques like mobilization, manipulation, and exercises. Tinnitus Retraining Therapy will follow its standard protocol, which includes directive counseling and the use of sound generators or environmental sound enrichment to reduce the contrast between tinnitus and background noise. The combined group will receive both full protocols.

Researchers will track a wide range of outcomes. The primary measures are tinnitus severity and tinnitus-related disability. Secondary measures include neck disability, cervical range of motion, audiological profiles, pressure pain thresholds in the neck and jaw, and levels of anxiety, depression, and quality of life.

Who can and cannot participate

The study seeks adults aged 18 to 65 with a key set of characteristics. Participants must have a diagnosis of chronic subjective tinnitus lasting at least three months. The critical inclusion factor is that their tinnitus must be modifiable by movements of the head, neck, or jaw, or by palpation of cervical muscles. They must also have normal middle ear function, confirmed by a tympanometry test, and be willing to attend all sessions.

The exclusion criteria are specific. Individuals with objective or pulsatile tinnitus, which often has a different vascular or muscular cause, cannot join. Those with a tinnitus duration under three months are also excluded, as are people with diagnoses like Ménière’s disease, otosclerosis, or vestibular schwannoma. Active middle ear disease or abnormal middle ear function will disqualify a potential participant.

The scientific rationale behind the trial

The study is built on a growing understanding of tinnitus subtypes. Not all tinnitus originates from the same source. Somatosensory tinnitus is thought to stem from abnormal sensorimotor integration, where signals from the cervical spine or temporomandibular region converge with auditory pathways in the brainstem. This can alter the gain of neuronal circuits and generate a phantom sound. Manual Therapy aims to treat the source by normalizing musculoskeletal input. Tinnitus Retraining Therapy works on the perceptual outcome by promoting habituation in the central auditory and limbic systems. The combined approach attempts to address both mechanisms simultaneously. The trial will test which strategy is most effective for this patient group.

Current trial status and recruitment timeline

As of the latest update on ClinicalTrials.gov, the trial status is listed as NOT_YET_RECRUITING. This means the study team is finalizing protocols, securing approvals, and preparing sites, but is not actively enrolling participants. The target enrollment is 65 participants total across the three groups. Individuals interested in this research should monitor the official listing for a status change to RECRUITING or contact the study locations directly for information on when enrollment may open.

Potential impact on treatment and patient care

The results of this trial could clarify a common clinical dilemma. For patients whose tinnitus changes with physical movement, the choice between a physical therapy referral, sound therapy, or both has been largely guided by clinician preference and resource availability. This head-to-head comparison will produce data on which monotherapy yields better outcomes, and whether combining them provides a significant advantage. Findings may lead to more standardized, evidence-based treatment pathways for somatosensory tinnitus. This could reduce the trial-and-error period many patients endure and direct healthcare resources toward the most effective interventions first.

This article is for informational purposes only. Consult a qualified professional for personalised advice.

Source:
COMPARISON OF MANUAL THERAPY, TINNITUS RETRAINING THERAPY (ClinicalTrials.gov: NCT07740954)