Generally, sleep apnea syndrome does not cause tinnitus. However, when the condition is severe, it may cause the patient to experience symptoms such as tinnitus and dizziness.
Tinnitus often does not cause sleep apnea. Apnea during sleep is mainly caused by partial or complete obstruction of the upper airway during sleep. Simply put, the airway becomes narrower or closed during sleep, and airflow cannot pass normally.
Tinnitus is a common otological symptom. Tinnitus is the auditory perception in the absence of external sound stimulation and is usually subjective. The prevalence of tinnitus in adults is between 10% and 15%.
Tinnitus can lead to anxiety, depression, and even suicidal behavior. Age, noise exposure, use of ototoxic drugs, hypertension, and diabetes are common risk factors for tinnitus, and hearing loss is also an important risk factor for tinnitus.
Obstructive sleep apnea (OSA) occurs due to partial or complete upper airway collapse during sleep, with the main clinical manifestations being snoring, excessive daytime sleepiness, or fatigue.
The inner ear organs are sensitive to intermittent hypoxic events. In recent years, more and more studies have focused on the correlation between OSA and the auditory system, including tinnitus, vertigo, and even hearing loss.
Is there a link between sleep apnea and tinnitus?
Generally speaking, if you suffer from sleep apnea hypopnea syndrome and the condition is more serious, it may cause tinnitus. The association between sleep apnea and tinnitus is not accidental, but closely linked through multiple physiological mechanisms:
1. The “suffocation” crisis of the inner ear microcirculation: repeated hypoxia caused by apnea directly affects the inner ear (cochlea) and its sensitive hair cells and neural structures. The inner ear is highly sensitive to changes in oxygen supply, and hypoxia can directly damage the function of hair cells or cause their death.
Hypoxia also damages endothelial function, affects blood flow and nutrient supply to tiny blood vessels in the inner ear, and further aggravates damage to the auditory system.
2. The “aftermath” of the inflammatory storm: The intermittent hypoxia/reoxygenation process triggers a strong systemic inflammatory response, releasing a large number of inflammatory factors. These inflammatory factors reach the inner ear and auditory center through blood circulation, which may directly cause damage to them or put them in a highly sensitive state, becoming the “fuel” for the generation or aggravation of tinnitus.
3.”Brain misjudgment” under fragmented sleep: Sleep apnea causes severe fragmentation of sleep structure, depriving the critical deep sleep period. Long-term sleep deprivation and poor sleep quality will damage the brain’s central nervous system (especially the auditory cortex)’s ability to process and filter neural signals. The brain may “mistakenly amplify” weak background neural activity that should have been ignored and interpret it as a sound signal, that is, tinnitus.
Studies have shown that OSA is associated with tinnitus, and trials have shown that this association exists independently. A large population-based case-control study from the National Health Insurance Research Database in Taiwan found that patients with OSA had a 1.36-fold higher risk of tinnitus compared with those without OSA.
Another small sample study showed that OSA patients with higher Epworth Sleepiness Scale scores had a higher risk of tinnitus. The proportion of tinnitus in OSA patients was higher than that in patients without OSA, and the severity of OSA was associated with the prevalence of tinnitus.
The pathophysiology of tinnitus is complex. The current consensus is that tinnitus is related to abnormal neural activity at some level of the auditory system and is the result of a complex interaction of peripheral and central mechanisms in the auditory pathway.
When peripheral auditory receptor damage occurs, the neural output from the cochlea is weakened, and an automatic compensation mechanism occurs in the auditory center, resulting in tinnitus. Therefore, the pathogenesis of tinnitus is a two-stage process that starts with damage to the peripheral auditory system and then promotes the formation of long-term tinnitus. Therefore, the neural plasticity of the inner ear and central system is crucial to the maintenance of tinnitus.
Sleep may play a role in the pathogenesis of tinnitus through cortical mapping and plasticity at the system level. The mechanism of the interaction between OSA and tinnitus is poorly studied. However, pathophysiological factors of OSA, such as indirect hypoxemia, sleep fragmentation, altered sympathetic excitability, inflammation, and oxidative stress, play a role in the formation of the above-mentioned tinnitus. Therefore, OSA is one of the risk factors for tinnitus. However, there is no correlation between OSA and hearing loss.
What to do if you have severe tinnitus while sleeping？
Severe tinnitus during sleep can usually be improved through local massage or hot compress, or by using sleep-promoting drugs under the guidance of a doctor, and nerve-nourishing drugs when necessary. However, appropriate methods should be used to improve the situation according to the specific situation.
1. Local hot compress or massage: If you have severe tinnitus symptoms when sleeping at night, you can apply a hot compress or massage the acupoints in the ear area to speed up local blood circulation and thus alleviate tinnitus symptoms.
2. Use sleep-promoting drugs: If tinnitus has affected the quality of normal sleep and is accompanied by insomnia and dreaminess, you can take sleep-promoting drugs for treatment, which can alleviate the symptoms of tinnitus in the ear area. However, you cannot use the drugs without authorization and must use them reasonably according to the doctor’s orders.
3. Use nerve nourishing drugs: If the nerves in the ear are damaged and accompanied by severe tinnitus, you need to take nerve nourishing drugs for treatment to relieve the tinnitus.
4. Change your sleeping position: Sleeping position cannot completely cure or eliminate tinnitus. However, some sleep experts recommend raising your head while sleeping, which can reduce tinnitus.
Treatment of tinnitus
If you suffer from both sleep apnea and tinnitus, it’s important to take proactive action:
Clear diagnosis: If obstructive sleep apnea syndrome is suspected, be sure to seek medical attention promptly and undergo polysomnography to confirm the diagnosis.
Assess tinnitus: Perform a detailed examination (audiology test, etc.) to exclude other treatable causes of tinnitus (such as wax impaction, otitis media, etc.).
Active treatment of sleep apnea: It can be treated through weight loss, changing sleeping position, surgery (to address specific anatomical problems), continuous positive airway pressure (CPAP), oral appliances (for mild to moderate cases), etc.
Comprehensive management of tinnitus: hearing protection, sound therapy, tinnitus habituation therapy, cognitive behavioral therapy, strict control of blood pressure and blood sugar, and attention to stress and emotion management.
When treating tinnitus, which condition that should be treated first depends on the underlying cause of the tinnitus.
The causes of tinnitus include, but are not limited to, the following:
1. Lifestyle habits: high stress in life, irritability, staying up late frequently, leading to physical overwork, etc., may all cause tinnitus.
2. Chronic diseases, such as high blood pressure, low blood pressure, diabetes, etc. These diseases may lead to low immunity of the body and thus cause tinnitus-related symptoms.
3. Ear diseases: including otitis externa, otitis media, tympanic membrane perforation, and middle ear effusion, etc. These organic ear diseases are common causes of tinnitus.
4. Inner ear diseases, such as Meniere’s disease, labyrinthitis, sudden deafness, etc. These inner ear diseases may also cause tinnitus.
5. Noise environment: If people are exposed to a strong noise environment for a long time, it may cause damage to the cochlear hair cells, leading to tinnitus.
6. Vascular diseases, such as increased intracranial pressure, these diseases may also cause tinnitus.
7. Drug factors: Excessive use of certain drugs that are toxic to the ears, such as gentamicin, streptomycin, etc., may also cause tinnitus.
The main treatments for tinnitus include the following:
1. Drug treatment: You can choose muscle relaxants, vasodilators (such as niacin), neurotrophic drugs (such as B vitamins), etc. Doctors will also prescribe corresponding drugs for specific causes, such as otitis media or neurological tinnitus.
2. Neurostimulation therapy: There are two types of therapy: invasive and non-invasive. You can choose methods such as cranial electrical stimulation or acoustic coordinated repositioning neuromodulation.
3. Surgical treatment: For some patients with anatomical deformities or severe lesions, surgical treatment may be required.
4. Masking therapy: Under the guidance of a doctor, masking therapy using tinnitus treatment devices, tinnitus maskers, etc., is also an effective method.
5. Psychotherapy: Under the guidance of a psychologist, cognitive therapy is used to adapt to and accept tinnitus, thereby reducing its impact on work and life.
6. Adjustment of lifestyle: Paying attention to relaxation, avoiding staying up late to work overtime, and maintaining good living habits can also help relieve tinnitus symptoms. At the same time, avoiding long-term exposure to noisy environments is also an important measure to prevent tinnitus.
To sum up, there are many causes of tinnitus, and the treatment method needs to be selected according to the specific cause.
