Tinnitus consists of internal sounds of varying intensity perceived in one or both ears or in the head, which do not originate from an external auditory stimulus. Many people complain of intolerable tinnitus, which may conceal various disorders of the hearing system.
Prompt assessment helps investigate tinnitus characteristics and associated symptoms, but does not guarantee reduction or elimination. Stress, ageing and hearing may be relevant without explaining every presentation. Appropriate ENT assessment and audiological testing depend on the clinical findings.
Acu-LLLT has been investigated for tinnitus. It is not established here as an effective solution for hearing loss, Ménière’s disease or a sudden hearing change. The German guideline for chronic tinnitus recommends against low-level laser therapy because efficacy has not been demonstrated.
Light application requires appropriate assessment and should not be described as universally painless or risk-free. A description of cellular mechanisms is insufficient to demonstrate restored hearing. Older reports need critical reading in relation to comparison groups, study quality and follow-up. A technical account of tissue stimulation cannot substitute for evidence of a worthwhile clinical outcome in people with the relevant condition.
- Guaranteed regeneration of auditory cells has not been established.
- Universal strengthening of immunity has not been demonstrated.
- A cellular change is not equivalent to an improved audiogram.
- Distress and hearing function are assessed separately.
- Available options should be discussed with the specialist.
- Sudden hearing loss requires urgent assessment.
References
- Goodman SS, Bentler RA, Dittberner A, Mertes IB. The effect of low-level LLLT therapy on hearing. ISRN Otolaryngol. 2013 Apr.
- Ngao CF, Tan TS, Narayanan P, Raman R. The effectiveness of transmeatal low-power LLLT stimulation in treating tinnitus. Eur Arch Otorhinolaryngol. 2014 May;271(5):975-80.
- Salahaldin AH, Abdulhadi K, Najjar N, Bener A. Low-level LLLT therapy in patients with complaints of tinnitus: a clinical study. ISRN Otolaryngol. 2012 Apr 9.
- Teggi R, Bellini C, Piccioni LO, Palonta F, Bussi M. Transmeatal low-level LLLT therapy for chronic tinnitus with cochlear dysfunction. Audiol Neurootol. 2009;14(2):115-20.
Tinnitus and Acu-LLLT: key questions
Tinnitus needs the context of hearing and medical assessment. It should not automatically be attributed to stress.
For a description of the method, see Laser Acupuncture. Related reading: LLLT acupuncture and low-level laser.
Describe the sound and its context
Tinnitus may be described as ringing, buzzing, whistling, pulsation or another sound. Assessment benefits from knowing whether it affects one or both ears, whether it is continuous and whether it follows the pulse. Mention hearing changes, dizziness, noise exposure and recently started medication. The intensity of distress does not by itself establish the cause. Stress may influence the experience, but it is not an adequate universal explanation for every presentation. Precise description is more useful than assuming all tinnitus has the same origin.
The assessment also considers sleep, concentration and daily activities. NICE recommends audiological assessment for people with tinnitus. Further investigation depends on the history and findings; everyone does not require the same tests. Having tinnitus does not automatically establish one particular injury. Information should distinguish investigation of a possible cause from management of distress that may persist. These are related tasks, but an improvement in coping does not necessarily mean the hearing measurement or underlying condition has changed in the same way.
Sudden hearing loss should not wait
New, sudden hearing reduction, particularly with tinnitus, requires urgent medical assessment. Sudden neurological symptoms or a severe new balance problem also need prompt evaluation. They should not be dismissed as tension or left until a course of complementary sessions has finished. An article about a device cannot diagnose these presentations. Timing and associated symptoms determine urgency, rather than a promise that a convenient non-drug approach can address several different inner-ear conditions without further assessment.
Tinnitus following the pulse or persisting only on one side also deserves specific mention to the specialist. Decisions about further investigation are clinical ones. Looking for information helps when it supports an accurate history; it becomes less helpful when it encourages self-diagnosis from lists of diseases. Asking which features need investigation in your circumstances provides a clearer starting point than choosing a treatment solely because its description appears to match the sound you hear.
What LLLT research can establish
Low-level light treatment has been studied for tinnitus, but the existence of studies does not establish restoration of hearing. The German clinical guideline for chronic tinnitus recommends against low-level laser therapy because efficacy has not been demonstrated. It should therefore not be presented as proven regeneration of auditory cells or reliable elimination of the sound. A cellular hypothesis cannot replace measurable clinical benefit in appropriate comparisons. Technical descriptions of stimulation need to remain distinct from claims about a person’s hearing or daily functioning.
When reading a trial, identify the comparison group, tinnitus characteristics, follow-up and adverse-event reporting. A questionnaire change is not the same result as improvement on an audiogram. Each can answer a different question. When certainty is limited, the price of a device or its description as advanced technology does not remove that limitation. Discussion of uncertainty belongs before financial commitment, with a clear account of what is being offered and what outcome remains unproven.
Support should have an agreed purpose
Depending on assessment, goals may concern sleep, reduced distress or associated hearing loss. Support for distress does not imply the symptom is imaginary. Discuss available options and how usefulness will be reviewed. If a service is proposed, clarify its content, cost and review point. A predetermined course should not be interpreted as a promise of cure or guaranteed return of hearing. Clear goals make later decisions easier to assess against experience.
Sources for further information
Photobiomodulation and light parameters
Is a description of tinnitus enough to choose a light application?
No. Hearing and symptom assessment come first. The article does not guarantee elimination of tinnitus or define a suitable protocol for everyone.
Are all LLLT applications the same procedure?
No. The application site, wavelength, power and dose can differ. A description of a mechanism or a particular study cannot be transferred unchanged to every device and application.