Ringing in the ear, known as tinnitus, happens when your brain generates a phantom sound in response to changes in the auditory system. About 14.4% of adults worldwide have experienced it, and roughly 10% have a chronic form lasting more than three months. The sound isn’t imaginary, but in most cases, there’s no external source producing it. Instead, it originates from shifts in how your brain processes sound signals.
What Happens Inside Your Brain
The most common form of tinnitus starts with some degree of hearing loss, even if it’s too subtle for you to notice. When the delicate hair cells in your inner ear become damaged or deteriorate, they send fewer signals to the brain. Your auditory system is organized like a map, with different neurons tuned to different frequencies. When a group of neurons stops receiving its usual input, the brain doesn’t just go quiet. It compensates.
Neurons in the affected region begin responding to signals from their still-functioning neighbors. Their spontaneous firing rates increase, meaning they start firing on their own without any actual sound to trigger them. At the same time, the brain’s normal inhibitory mechanisms, the ones that keep neural activity in check, weaken. The result is a kind of neural hyperactivity. Your brain interprets this excess firing according to the original frequency those neurons were tuned to, and you hear it as a tone, a hiss, or a ring.
This process doesn’t happen instantly. Research published in The Journal of Neuroscience shows that increased spontaneous firing develops over several days, suggesting the brain is actively reorganizing itself in response to the lost input. There’s also a mismatch between what the brain predicts it should hear and what it actually receives, which can draw auditory attention to the phantom signal and make it more persistent.
Noise Damage and Age-Related Hearing Loss
The single most common trigger is damage to inner ear hair cells from loud sound. These cells don’t regenerate in humans, so the damage is permanent. You don’t need a single explosive blast to cause harm. Repeated exposure at moderate-to-high volumes does cumulative damage over years. Common culprits include concerts, factory or construction noise, power tools (including lawn mowers and leaf blowers), firearms, gym music, and earbuds or headphones turned up too loud.
Age-related hearing loss is the other major driver. As hair cells naturally deteriorate with age, the brain receives less input across certain frequencies, setting off the same compensatory process described above. Many people first notice tinnitus in their 40s or 50s, when high-frequency hearing begins to decline. Smoking also damages the inner ear and independently raises the risk of both hearing loss and tinnitus.
Medications That Can Trigger It
Certain drugs are known to be ototoxic, meaning they can harm the structures of the inner ear. Tinnitus is a recognized side effect of several common medication classes. High doses of aspirin are one of the oldest known triggers. Certain antibiotics, particularly macrolide types like azithromycin and clarithromycin, can cause it when prescribed at high doses for extended periods. Loop diuretics used for heart failure and kidney disease carry the risk as well. Some chemotherapy drugs, particularly platinum-based agents, are among the most potent ototoxic medications. In many cases, tinnitus from medication improves or resolves after the drug is stopped, but not always.
Jaw Problems and Neck Tension
Not all tinnitus originates from hearing loss. Problems with the temporomandibular joint (the hinge connecting your jaw to your skull) and injuries to the neck are both linked to tinnitus. People with jaw disorders are more likely to experience ringing, and some can actually change the pitch or loudness of their tinnitus by moving their jaw, face, or neck. This is called somatosensory tinnitus.
There are a few reasons for the connection. The muscles you use for chewing sit close to muscles that attach to the middle ear, so dysfunction in one group can affect the other. There’s also a ligament that directly connects the jaw to one of the tiny hearing bones inside the middle ear. If that ligament becomes strained or inflamed, it can influence how sound is transmitted. Finally, the nerve supply from the jaw joint has connections to the parts of the brain involved in hearing and sound interpretation, creating a direct neural pathway for jaw problems to influence what you hear.
Pulsatile Tinnitus: When It Matches Your Heartbeat
A distinct type of tinnitus produces a rhythmic whooshing or thumping that syncs with your pulse. Unlike the more common ringing or buzzing, pulsatile tinnitus usually has an identifiable physical cause related to blood flow near the ear. It’s one of the few forms where the sound is sometimes loud enough for a doctor to hear with a stethoscope.
Several conditions can produce it:
- Atherosclerosis creates uneven blood flow through arteries near the ears, making the blood audibly turbulent.
- High blood pressure puts extra force on blood vessel walls, amplifying the sound of blood flow.
- Anemia increases overall blood flow volume, raising the noise level in vessels near the ear.
- Arteriovenous malformations create tangles of blood vessels near the ears that produce abnormal flow patterns.
- Idiopathic intracranial hypertension causes cerebrospinal fluid to build up around the brain, pressing on blood vessels.
- Hyperthyroidism speeds up the heart and boosts blood flow throughout the body.
Pulsatile tinnitus is worth investigating promptly because, unlike most tinnitus, treating the underlying vascular or circulatory condition often resolves it.
Other Physical Causes
Earwax blockage is one of the simplest and most reversible causes. When wax builds up enough to press against the eardrum or block the ear canal, it can create or amplify ringing. Ear injuries, including changes in pressure from flying or diving, can also trigger tinnitus. Middle ear infections, stiffening of the bones in the middle ear, and benign growths on the auditory nerve are less common but well-documented causes.
How Tinnitus Is Managed
There is no pill that cures tinnitus, but several approaches can reduce how much it affects daily life. The goal of most treatments is to lower the brain’s attention to the phantom sound so it fades into the background.
Sound therapy uses external noise to reduce the contrast between the tinnitus and your environment. White noise machines, fan sounds, or specially designed ear-level devices provide a low level of background sound that makes the ringing less noticeable, particularly at night when quiet environments make tinnitus more prominent. The approach works best as part of a broader management plan rather than on its own.
Cognitive behavioral therapy (CBT) is the most studied psychological treatment for tinnitus. It doesn’t change the sound itself but changes how you respond to it. CBT helps break the cycle of frustration, anxiety, and hypervigilance that often makes tinnitus feel worse than the sound alone warrants. Studies show improvements in both tinnitus-related distress and negative thought patterns about the condition, whether delivered individually or in group settings.
Hearing aids help many people whose tinnitus accompanies hearing loss. By amplifying external sounds, they restore some of the missing input to the brain, which can reduce the neural hyperactivity driving the tinnitus. For some people, simply correcting their hearing loss with a well-fitted aid significantly quiets the ringing. If jaw or neck problems are contributing, physical therapy or dental treatment targeting those areas can improve tinnitus in that subset of patients.