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A New Trial Tests Foot and Ear Therapies for Tinnitus Relief

Up to 30% of adults experience tinnitus, the persistent perception of sound like ringing or buzzing when no external source exists. For many, it is more than a nuisance; it is a condition linked to anxiety, poor sleep, and physiological stress. A new clinical trial now running in Taiwan is examining a pair of non-drug approaches: stimulating the feet and the outer ear to quiet the brain’s noise. The “FR-taVNS Tinnitus Tria” investigates whether these methods can reduce tinnitus severity by calming the body’s stress response systems.

The trial focuses on two specific interventions. The first is foot reflexology (FR), a manual therapy applying pressure to specific points on the feet. The second is transcutaneous auricular vagus nerve stimulation (ta-VNS), which uses a low-current electrical device to stimulate branches of the vagus nerve on the outer ear. Both are grounded in the theory that tinnitus is maintained by a dysregulated autonomic nervous system—the part that controls our “fight-or-flight” and “rest-and-digest” states. By promoting relaxation and improving autonomic balance, the researchers hypothesize that these therapies may decrease the brain’s perception of tinnitus.

Trial Design: Comparing Touch and Electrical Stimulation to Usual Care

This is a randomized, single-blind, sham-controlled trial conducted at Hualien Tzu Chi Hospital. It will enroll 180 adults with tinnitus. The study has three main arms: a foot reflexology group, a ta-VNS group, and a usual-care control group. Critically, within the reflexology and ta-VNS arms, half of the participants will receive a “sham” version of the treatment. This design allows the researchers to determine if any benefits come from the specific therapy techniques or from general, non-specific effects like attention and expectation.

Participants in the true foot reflexology group will receive a 20-minute session once a week for four weeks. The protocol has three phases: relaxation, an inner-ear and autonomic regulation phase targeting specific foot zones, and a circulation phase. The sham reflexology uses only light, non-specific touch. The true ta-VNS group also has weekly 20-minute sessions for a month. A device delivers mild electrical pulses (25 Hz, 0.5-5 mA) to three specific points on the left outer ear—the tragus, cymba conchae, and cavum conchae—which house vagus nerve fibers. The sham ta-VNS stimulates the left earlobe at a very low, likely imperceptible current (0.5 mA).

All participants in the two active intervention arms will also perform daily auricular acupressure, pressing magnetic beads taped to ear points. Researchers will assess outcomes four times: at baseline, week 2, week 4 (treatment end), and week 8 (one-month follow-up).

The Science Behind Targeting Feet and Ears for Ear Noise

The rationale for this trial connects tinnitus distress to chronic physiological stress. The vagus nerve is a major component of the parasympathetic nervous system, which promotes calm and recovery. Stimulating it via the ear (ta-VNS) has shown promise in modulating brain networks involved in attention and distress, potentially turning down the volume on tinnitus. Separately, reflexology maps on the feet correspond to different body systems, including areas for the inner ear and autonomic regulation. The researchers propose that stimulating these zones may also promote systemic relaxation and improve autonomic function, measured by heart rate variability and salivary cortisol levels.

Notably, this trial excludes individuals with significant hearing loss, focusing instead on participants with normal pure-tone thresholds (≤25 dB HL). This isolates a subpopulation where tinnitus may be more centrally driven and tightly linked to stress pathways, rather than being a direct consequence of peripheral hearing damage.

Who Can Participate and What’s Next

The trial is currently RECRUITING its target of 180 participants. Eligible individuals are aged 18-75, have tinnitus as their primary complaint, and have normal hearing thresholds at key frequencies. Key exclusions include objective tinnitus (sound generated inside the body), certain ear pathologies, open wounds on the feet or ears, diabetes with poorly controlled blood sugar (HbA1c >7.5%), and having a cardiac pacemaker or a history of seizures.

If the trial demonstrates clear benefits for either foot reflexology or ta-VNS, it would provide evidence for new, accessible non-pharmacological tools in tinnitus management. These approaches could offer options for patients seeking alternatives to drugs or sound therapy, particularly those whose tinnitus is exacerbated by stress. The inclusion of biological markers like heart rate variability could also help identify which patients are most likely to respond to these nervous-system-focused therapies. Results are expected after the completion of the trial and data analysis.

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

Source:
FR-taVNS Tinnitus Tria (ClinicalTrials.gov: NCT07711639)