1. Applicability
    Other secondary hearing symptoms  Limitations 

2. Cause
    Physiological basis  Psychological model 

3. Methodologies
    Classification  Counseling 

4. Efficacy

5. Clinical practice

6. Research

7. Alternatives
    Cognitive behavior therapy  Hearing aids   Masking   Other 

8. See also

9. References

10. External links

The goal of TRT is management of the reaction to tinnitus, thereby allowing habituation to begin and return to previous levels of perception^[3] The efficacy of TRT in reducing the distress of tinnitus has been established.^[4] " Response to tinnitus is evaluated at the end of 3 months. In our study 57 patients in age group 21–78 years were selected and Tinnitus retraining therapy was administered. Most of patients had moderate (75.43%) perception of tinnitus before initiation of therapy. After completion of therapy tinnitus completely disappeared in 34 (59.65%) patients. Improvement in Tinnitus perception was observed in total of 49 (85.96%) patients. There was no improvement in Tinnitus perception in 8 (14.03%) patients. TRT aims in reducing the tinnitus perception by inducing habituation of tinnitus-induced reactions allowing patients to achieve control over their tinnitus, live a normal life, and participate in everyday activities."

TRT should be offered by Audiologists, ENTs, or psychologists ,they have reported success rates around 80%.^[5]

An alternative to TRT is tinnitus masking, the use of noise, music or other environmental sounds to obscure or mask the tinnitus. Hearing aids can provide a partial masking effect for the condition.^[6] Results from a review of tinnitus retraining therapy trials indicate that it may be a more effective treatment than tinnitus masking.^[7]

Applicability

Not everyone who experiences tinnitus is significantly bothered by it.{{citation needed|date=June 2018}} However, some of the problems caused by tinnitus include annoyance, anxiety, panic, and loss of sleep and/or concentration.^[2] The distress of tinnitus is strongly associated with various psychological factors; loudness, duration and other characteristics of the tinnitus are secondary.{{medical citation needed|date=December 2015}}

TRT may offer real although moderate improvement in tinnitus suffering for adults with moderate-to-severe tinnitus, in the absence of hyperacusis, significant hearing loss and/or depression.^[8] Not everyone is a good candidate for TRT. Factors associated with suitability for TRT and predisposing for favorable outcome are: lower loudness of tinnitus, higher pitch of tinnitus, shorter duration of tinnitus since onset, recognition of tinnitus attenuation by sound generator, lower hearing thresholds (i.e. better hearing), high Tinnitus Handicap Inventory (THI) score,^[9] and positive attitude toward therapy.^[10]

Other secondary hearing symptoms

Despite the fact that there haven't been any recent studies which concluded in its optimal treatment, tinnitus retraining therapy has been applied to treating hyperacusis, misophonia, and phonophobia.^[2]

Limitations

There is no evidence that TRT or any other treatment can eliminate or decrease tinnitus.{{citation needed|date=June 2018}} Tinnitus is a symptom, not a disease. As such, the optimal treatment strategy should be directed toward eliminating the disease, rather than simply alleviating the symptom.{{citation needed|date=June 2018}} More than half of people with tinnitus have a comorbid psychological injury or illness (e.g., post-traumatic stress disorder, depression, anxiety, obsessive compulsive disorder, stress, dysfunction of the temporomandibular joint, etc.) that can exacerbate the tinnitus.{{citation needed|date=June 2018}}

Cause

Physiological basis

It has been proposed that tinnitus is caused by mechanisms that generate abnormal neural activity, specifically one mechanism called discordant damage (dysfunction) of outer and inner hair cells of the cochlea.^[2]

Psychological model

The psychological basis for TRT stems from the fact that the brain exhibits a high level of plasticity. In turn, this allows it to adjust to any sensory signals as long as they do not lead to negative effects. TRT is imputed to work by interfering with the neural activity causing the tinnitus at its source, in order to prevent it from spreading to other nervous systems such as the limbic and autonomic nervous systems.^[2]

Methodologies

Classification

Clients are classified into 5 categories. These categories are numbered 0 to 4, and based on whether or not the patient has tinnitus with hearing loss, tinnitus with no hearing loss, tinnitus with hearing loss and hyperacusis, and tinnitus with hearing loss and hyperacusis for an extended amount of time.{{citation needed|date=June 2018}}

Counseling

The first component of TRT, directive counseling, may change the way tinnitus is perceived. The patient is taught the basic knowledge about the auditory system and its function, the mechanism of tinnitus generation and the annoyance associated with tinnitus. The repetition of these points in the follow-up visits helps the patient to perceive the signal as a non-danger.{{medical citation needed|date=December 2015}}

Efficacy

Measuring the efficacy of TRT is beset by confounding factors: tinnitus reporting is entirely subjective therefore not reliable; tinnitus or at least subjects' perception of it varies over time and repeated evaluations are not consistent. Researchers have noted that there is a large placebo component to tinnitus management. In many commercial TRT practices, there is a large proportion of dropouts; reported 'success' ratios may not take these subjects into account.

There are few available studies, but most show that tinnitus naturally declines over time (years) in a large proportion of subjects surveyed, without any treatment. The annoyance of tinnitus also tends to decline over time. In at least some, tinnitus spontaneously disappears.^[1]

A Cochrane review found only one sufficiently rigorous study of TRT and noted that while the study suggested benefit in the treatment of tinnitus, the study quality was not good enough to draw firm conclusions.^[7] A separate Cochrane review of sound therapy (though they called it masking), an integral part of TRT, found no convincing evidence of the efficacy of sound therapy in the treatment of tinnitus.^[11]

A summary in The Lancet concluded that in the only decent study, TRT was more effective than masking; in another study in which TRT was used as a control methodology, TRT showed a small benefit. A study which compared cognitive behavior therapy (CBT) in combination with the counselling part of TRT versus standard care (ENT, audiologist, maskers, hearing aid) found that the specialized care had a positive effect on quality of life as well as specific tinnitus metrics.^[12]

Clinical practice

Tinnitus activities treatment (TAT) is a clinical adaptation of TRT that focuses on four areas: thoughts and emotions, hearing and communication, sleep, and concentration.^[13]

Progressive tinnitus management (PTM) is a 5-step structured clinical protocol for management of tinnitus which may include tinnitus retraining therapy. The five steps are:

1. triage – determining appropriate referral, i.e. audiology, ENT, emergency medical intervention, or mental health evaluation;
2. audiologic evaluation of hearing loss, tinnitus, hyperacusis and other symptoms;
3. group education about causes and management of tinnitus;
4. interdisciplinary evaluation of tinnitus;
5. individual management of tinnitus.^&91;14&93;

The U.S. Department of Veterans Affairs (VA) now employs PTM to help patients self-manage their tinnitus.^[15]

Research

• Sound therapy for tinnitus may be more effective if the sound is patterned (i.e. varying in frequency or amplitude) rather than static.^[16]
• For persons with severe or disabling tinnitus, techniques that are minimally surgical involving magnetic or electrical stimulation of areas of the brain involved in auditory processing may suppress tinnitus.^[17]
• Notched music therapy, in which ordinary music is altered by a one octave notch filter centered at the tinnitus frequency, may reduce tinnitus.^[18]

Alternatives

Cognitive behavior therapy

Hearing aids

If tinnitus is associated with hearing loss, a tuned hearing aid that amplifies sound in the frequency range of the hearing loss (usually the high frequencies) may effectively mask tinnitus by raising the level of environmental sound, in addition to the benefit of restoring hearing.

Masking

White noise generators or environmental music may be used to provide a background noise level that is of sufficient amplitude that it wholly or partially 'masks' the tinnitus (tinnitus masker). Composite hearing aids that combine amplification and white noise

generation are also available.

Other

Numerous other non-TRT methods have been suggested for the treatment or management of tinnitus.

• pharmacological – No drug has been approved by the U.S. Food and Drug Administration (FDA) for treating tinnitus. However, various pharmacological treatments, including antidepressants, anxiolytics, vasodilators and vasoactive substances, and intravenous lidocaine have been prescribed for tinnitus
• lifestyle and support – Things like loud noise, alcohol, caffeine, nicotine, quiet environments and psychological conditions like stress and depression may exacerbate tinnitus. Reducing or controlling these may help manage the condition.
• alternative medicine – vitamin, antioxidant and herbal preparations (notably Ginkgo biloba extract, also called EGb761) are advertised as treatments or cures for tinnitus. However, none are approved by the FDA, and controlled clinical trials on their efficacy are lacking.

See also

• Operant conditioning

References

External links

• [https://www.ata.org/ American Tinnitus Association]
• [https://www.tinnitus.org.uk/ British Tinnitus Association]
• [https://www.deutsche-tinnitus-stiftung-charite.de/en/home/ German Tinnitus Foundation]

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