NM
Reviewed by the Neuromonics Clinical Team
Published April 2025 · 6 min read
The short answer:Tinnitus is the perception of sound — ringing, buzzing, humming, or hissing — when no external sound source is present. It affects approximately 750 million people worldwide and 50 million Americans. While there is no universal cure, the distress and intrusiveness of tinnitus can be dramatically reduced through clinically-validated treatments that target the brain's response to the signal.
What you'll learn
- →What tinnitus is — and the different forms it takes
- →The 8 most common causes and triggers
- →How your brain actually creates the phantom sound
- →How many people have tinnitus worldwide and in the US
- →Every treatment option available and the clinical evidence
- →Practical strategies for managing tinnitus day-to-day
- →When to see a doctor — and the red flags to watch for
What Is Tinnitus and Why Do People Experience Ringing in the Ears?
What Is Tinnitus and Why Do People Experience Ringing in the Ears?
Tinnitus is one of those conditions that many people have heard of, but few truly understand until they experience it firsthand. It’s often described as a persistent ringing, buzzing, humming, or hissing sound that seems to come from inside the ear or head—even when no external noise is present. For some, it’s a mild annoyance that fades into the background. For others, it can be a constant distraction that interferes with concentration, sleep, and overall quality of life.
Tinnitus is one of those conditions that many people have heard of, but few truly understand until they experience it firsthand. It’s often described as a persistent ringing, buzzing, humming, or hissing sound that seems to come from inside the ear or head—even when no external noise is present. For some, it’s a mild annoyance that fades into the background. For others, it can be a constant distraction that interferes with concentration, sleep, and overall quality of life.
Common Causes and Triggers
1
Noise exposure
Regular exposure to loud environments — concerts, construction sites, headphones at high volume — can damage the inner ear's hair cells and trigger tinnitus. Even a single extremely loud event can cause permanent damage.
2
Age-related hearing loss
As we age, the cochlea's hair cells gradually deteriorate. The brain compensates by amplifying its own neural activity — which is perceived as tinnitus. This is the most common cause in adults over 60.
3
Stress and anxiety
Emotional stress powerfully amplifies existing tinnitus. The stress response releases hormones that increase auditory sensitivity, making the tinnitus signal feel louder and more intrusive.
4
Earwax buildup
Excess earwax pressing against the eardrum alters sound transmission and can cause or worsen tinnitus. Professional earwax removal often resolves this type completely.
5
Ear infections and middle ear conditions
Inflammation, fluid buildup, or infection in the middle ear disrupts normal sound transmission and can trigger temporary tinnitus that resolves with treatment.
6
Medications
Over 200 medications list tinnitus as a side effect, including high-dose aspirin, certain antibiotics, and some chemotherapy agents. If tinnitus starts after a new medication, tell your doctor.
How the Brain Perceives Tinnitus
Researchers believe tinnitus results from changes in how the brain processes sound. When hearing loss or ear damage reduces input to the auditory nerve, the brain may try to “fill in the gaps” by creating phantom sounds. This is similar to what happens with phantom limb pain—where the brain continues to sense something even after it’s no longer receiving input.
Why Some People Notice It More Than Others
Interestingly, not everyone with hearing loss or ear issues experiences tinnitus. For some, it's only noticeable in quiet environments, while for others, it's persistent and intrusive. Factors such as stress, fatigue, and even diet can influence the intensity of tinnitus. People who are more sensitive to sound or prone to anxiety may also find it harder to ignore.
The Importance of Identifying the Root Cause
Because tinnitus can stem from so many different sources, identifying the underlying cause is key to finding effective treatment. For some, removing earwax or treating an infection resolves the issue. For others, sound therapy, stress management, or neurological desensitization may be necessary.
