A ' cure' hasn't been found yet, or never will be found because it's a too complex condition where the brain is involved.
From my limited understanding, tinnitus is proposed to be the result of the (mal)adaptive neuroplasticity (the brain trying to fix itself) that occurs following destruction of inner ear hair cells and the consequent loss of stimulation to the auditory neurons involved.
If we fix the ears, the brain issues may resolve. If the Frequency Therapeutics clinical trials (due to start in a year) are successful in regenerating hair cells then the electrical input to the auditory neurons may be restored, thus curing tinnitus.
Here is a paper that I found that supports this idea:
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Incapacitating Unilateral Tinnitus in Single-Sided Deafness Treated by Cochlear Implantation
Objectives: Tinnitus is a well-known, difficult-to-treat symptom of hearing loss. Users of cochlear implants (CIs) have
reported a reduction in tinnitus following implantation for bilateral severe-to-profound deafness. This study assessed the effect of electrical stimulation via a CI on tinnitus in subjects with unilateral deafness and ipsilateral tinnitus who under-
went implantation in an attempt to treat tinnitus with the CI.
Methods: Twenty-one subjects who complained of severe intractable tinnitus that was unresponsive to treatment received a CI. Tinnitus loudness was measured with a Visual Analog Scale; loudness percepts were recorded with the device activated and deactivated. Tinnitus distress was measured with the Tinnitus Questionnaire before and after implantation.
Results: Electrical stimulation via a CI resulted in a significant reduction in tinnitus loudness (mean ± SD; 1 year after
implantation, 2.4 ± 1.8; 2 years after implantation, 2.5 ± 1.9; before implantation, 8.5 ± 1.3). With the device deactivated,tinnitus loudness was still reduced to between 6.1 and 7.0 over 24 months. The Tinnitus Questionnaire revealed a signifi-
cant positive effect of CI stimulation.
Conclusions: Unilateral tinnitus resulting from single-sided deafness can be treated with electrical stimulation via a CI.
The outcomes of this pilot study demonstrate a new method for treatment of tinnitus in select subjects, perhaps an important new indication for cochlear implantation.
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