What is tinnitus?
Tinnitus is the sound of ringing in the ears in the absence of audible noise. The sound may mimic noises, such as buzzing, ringing, clicking, hissing, clanging or wheezing. Tinnitus can have a gradual onset or occur abruptly. It is a common occurrence that can range in severity from being a nuisance to being a symptom of a medical emergency that should be evaluated immediately.
Tinnitus has no known direct cause, but it can be symptomatic of ear infections, foreign objects in the ear, allergies, high blood pressure, anemia, or a condition known as Meniere’s disease (swelling in part of the inner ear canal, causing dizziness and hearing loss). Alcohol, caffeine, and certain drugs are also contributing factors in some cases of tinnitus. Ninety percent of people with tinnitus have significant sensorineural hearing loss.
Seek prompt medical care if you have tinnitus that is persistent, recurrent, or causes you concern.
What are the symptoms of tinnitus?
Symptoms of tinnitus occur in the ears, mimicking the sounds of ringing, buzzing, clicking, hissing, clanging or wheezing. Tinnitus derives from the Latin verb “to ring”. The volume may be very low or high, and the sound may occur in one or both ears. You may barely be aware of your tinnitus, or it may distract you from your daily routines. Tinnitus results from the brain’s misinterpreting nerve signals as sound.
Common symptoms of tinnitus
Symptoms of tinnitus include hearing sounds that mimic:
Symptoms that may accompany tinnitus
Conditions that cause tinnitus may be accompanied by other symptoms including:
- Discharge or drainage from the ear
- Dizziness or vertigo
- Ear pain or fullness
- Malaise or lethargy
- Redness, warmth or swelling
Serious symptoms that might indicate a life-threatening condition
In some cases, tinnitus can indicate a life-threatening condition, especially if it occurs following a head injury. Seek immediate medical care (call 911) if you, or someone you are with, have any of these life-threatening symptoms including:
What causes tinnitus?
The ear canal is lined with tiny hairs that sense movement and vibration conveyed to the brain as sound. Tinnitus occurs when these cells in your ear that respond to sound waves malfunction and transmit electrical impulses that your brain misinterprets as sound.
Tinnitus can be idiopathic, which means that it has no known cause. Alternatively, it may result from various causes, including underlying ear infections, medications, foreign objects in the ear, allergies, high blood pressure, anemia, or Meniere’s disease (swelling in part of the inner ear canal, causing dizziness and hearing loss).
Common causes of tinnitus
Common causes of tinnitus include:
Acoustic neuroma (benign tumor of the vestibulocochlear nerve)
Blood vessel disorders
Exposure to loud noises
Meniere’s disease (swelling in part of the inner ear canal, causing dizziness and hearing loss)
Otosclerosis (hardening of the bones in the ear)
Temporomandibular joint (TMJ) pain
Medications that can cause tinnitus
Certain drugs may lead to tinnitus as a side effect including:
- Antimalaria drugs
- Aspirin (high doses)
- Cancer medications
Serious or life-threatening causes of tinnitus
In rare cases, tinnitus may be caused by serious or potentially life-threatening conditions including:
- Brain tumor
- Head injury
- Intracranial vascular abnormality
What are the risk factors for tinnitus?
A number of factors increase the risk of developing tinnitus. Not all people with risk factors will get tinnitus. Risk factors for tinnitus include:
Age over 65
Ear infections or ear wax blockage
Exposure to loud noise
Hearing loss attributed to age
Male gender (tinnitus is more common in men)
Use of medications, such as antibiotics, high-dose aspirin, cancer medications, or antimalaria drugs
Reducing your risk of tinnitus
Some risk factors for tinnitus cannot be controlled. However, you can take certain steps to reduce your risk of tinnitus including:
Changing medications that are linked with tinnitus. Any changes of medication must be done under the supervision of your health care provider.
Reducing your exposure to loud noise
Seeing your health care provider for diagnosis and treatment of any underlying disorders
How is tinnitus treated?
There is no one identifiable treatment for tinnitus. However, you and your doctor can work toward identifying the underlying cause of your tinnitus. This may include assessing your medications to determine whether any are causing the symptoms, or diagnosing an underlying blood vessel disorder.
Medications for conditions causing tinnitus
Depending on the underlying cause of your tinnitus, your health care provider may prescribe medications including:
Antianxiety drugs to reduce stress
Antiarrhythmic drugs to help control heart rate
Antidepressants to treat depression
Hypertension drugs to lower blood pressure
Devices for tinnitus
Some devices may be helpful to mask tinnitus or to allow you to hear better despite your tinnitus. These include:
Tinnitus masker (device similar to a hearing aid that directs a controlled noise into your ear to cover the tinnitus)
White noise generators
Some complementary treatments may help some people in their efforts to deal with tinnitus. These treatments, sometimes referred to as alternative therapies, are used in conjunction with traditional medical treatments. Complementary treatments are not meant to substitute for traditional medical care. Be sure to notify your doctor if you are consuming nutritional supplements or homeopathic (nonprescription) remedies as they may interact with the prescribed medical therapy.
Complementary treatments may include:
Nutritional dietary supplements, herbal remedies, tea beverages, and similar products
What are the potential complications of tinnitus?
Left untreated, tinnitus can interfere with and potentially diminish your quality of life. Tinnitus can disrupt sleep and work, and cause you undue stress, anxiety, and depression. In addition, tinnitus may be a symptom of a serious condition, such as head injury or blood vessel disease, which may lead to serious, even life-threatening complications. Once the underlying cause of your tinnitus is diagnosed, it is important to follow the treatment plan that you and your health care provider design specifically for you.
Complications of untreated tinnitus or its underlying causes, such as head trauma or blood vessel diseases, include:
Adverse effects of treatment
Difficulty performing daily tasks
Mood changes, such as anxiety, depression and stress
Progressive hearing loss
Spread of cancer
Spread of infection