"Hyperacusis patients are some of the most challenging cases I see. The causes and treatment can sometimes be a medical mystery. I cannot stress this enough: these patients need a complete ENT and audiological workup to determine the cause and find solutions." - Drew Sutton, MD, Board-Certified ENT
This complexity allows us to distinguish environmental sounds very quickly, but it also opens the door to possible dysfunctions. One of these is hyperacusis, a hearing condition in which a person perceives everyday sounds as unpleasantly, or even painfully, loud.
Long considered rare, hyperacusis is now recognized as more common, particularly in people with tinnitus, neurological disorders, or sensory disorders. It can affect people of all ages, and understanding its possible causes and treatments can help you or your loved ones find relief.
Hyperacusis is generally considered a rare disorder, but it can affect people of all ages. Knowing about hyperacusis and the different treatment options allows you to make better decisions about your care or that of a loved one who suffers from it.
Here's a detailed look at hyperacusis, its possible causes, its effects on your life, and possible treatments.
What is hyperacusis?
Hyperacusis is a condition in which everyday sounds are perceived as abnormally loud, uncomfortable, or even painful. This reduced sound tolerance can disrupt daily life and often causes emotional distress or physical discomfort in the face of sounds that others tolerate without difficulty.
Reactions range from simple discomfort to marked aversion or anxiety, depending on the severity of the disorder and the trigger sounds involved.
There are different subtypes of hyperacusis, which manifest themselves slightly differently but share the same characteristic: increased sensitivity to sound.
Cochlear hyperacusis
Cochlear hyperacusis refers to cases where increased sound sensitivity appears to be related to a dysfunction of the auditory system itself, often involving the cochlea or the auditory nerve pathways.
Those affected may experience discomfort or pain from relatively faint sounds, such as running water, the clinking of dishes, or footsteps. The perceived intensity does not correspond to the actual sound level, which can make the most ordinary environments overwhelming.
Vestibular hyperacusis
Vestibular hyperacusis involves a response of the vestibular system (the balance system) to sound. Instead of perceiving the sound as painfully loud—or in addition to that—the person may experience dizziness, loss of balance, nausea, or disorientation in space when exposed to certain sounds.
This form is less common and is sometimes linked to inner ear disorders that affect both the auditory and vestibular systems.
Causes
The exact causes of hyperacusis are still being researched. It is thought to involve abnormal neural gain or hyperactivity of central auditory processing: the brain amplifies sound signals more than necessary, often as a result of a deregulation of normal sound regulation mechanisms.
Even if a single cause is not always identified, hyperacusis has been associated with several conditions:
Migraines
Migraines can increase sensitivity to various stimuli, including sound (phonophobia). In some people, this hypersensitivity persists between attacks and can resemble hyperacusis. These are not the same condition, but there are overlaps.
Tinnitus
Tinnitus (ringing or buzzing in the ears) and hyperacusis frequently coexist. Some studies suggest that up to 80% of people with hyperacusis also report tinnitus, although the link between the two is still being studied. Both could stem from similar changes in auditory processing in the brain.
Head injuries
Head injuries or concussions can disrupt central auditory processing and increase sound sensitivity. Hyperacusis following a head injury varies in severity and duration, and may improve over time with treatment or recovery.
Other possible causes of hyperacusis
-Temporomandibular joint (TMJ) disorder-Lyme disease-Bell's palsy-Tay-Sachs disease-Williams syndrome-Post-traumatic stress disorder (PTSD)-Chronic fatigue syndrome-Depression
-Hyperacusis can also lead to phonophobia, which is the fear of normal sounds.
Consequences of hyperacusis
Hyperacusis can have a significant impact on your daily life. Ordinary sounds like traffic, a cash register, or the clinking of dishes can become so irritating and loud that they negatively affect you, or even cause pain.
In general, hyperacusis can be debilitating and put a strain on your relationships, your mental balance, and your overall health. The repercussions are numerous; here is a more detailed look at some of the ways hyperacusis can affect your life.
A source of distraction
One of the most disabling aspects of hyperacusis is that it monopolizes your attention and harms your productivity and work. Staying focused is already difficult enough; add hypersensitivity to noise and the distraction factor increases significantly.
Many distractions can simply be ignored, but with hyperacusis, it is difficult to move on: the sound grabs your attention and its perceived intensity is simply too great to be ignored.
Social avoidance
Another aspect of hyperacusis: many people organize their lives around when they can do things with the least possible exposure to noise. Shopping in the middle of a weekday, giving up meeting friends, gradually withdrawing: all of this can harm your social and mental well-being.
Relationship tensions
Hyperacusis can also affect relationships. For those affected, it can sometimes be difficult to live with others, as small everyday noises trigger pain, annoyance, and other negative emotions.
Being surrounded by loved ones can be therapeutic, but in cases of severe hyperacusis, if they are not perfectly silent, they may unintentionally cause pain. Moreover, the emotional burden of hyperacusis can make you more on edge than you normally would be.
Treatments
The treatment for hyperacusis depends on the underlying cause and individual needs. There is no universal cure, but many people benefit from approaches such as sound therapy, psychological support (e.g., CBT), and progressive sound desensitization, which helps improve tolerance.
If hyperacusis stems from another condition, such as a head injury or migraines, treating that condition can reduce symptoms. When no clear cause is identified, management focuses on developing tolerance and reducing emotional distress.
An ENT or audiologist will typically review your medical history, assess your symptoms, and perform a hearing evaluation. Depending on the results, they may recommend sound therapy programs, psychological support, or specialized sound tolerance devices. Medications are sometimes used to treat associated disorders, but they are not a first-line treatment.
It is always best for a healthcare professional to monitor your situation and adjust treatment as needed.
Hearing filters
Some people with hyperacusis choose to frequently wear earplugs to avoid unpleasant sounds. This can provide short-term relief, but excessive use of earplugs in everyday environments can actually worsen sound sensitivity over time. Constantly deprived of sound input, the brain becomes less tolerant to normal sound levels.
Another solution is to use specialized hearing filters, which attenuate aggressive or trigger sounds while allowing some natural environmental sounds to pass through. These filters offer a more balanced way to navigate daily life, particularly in moderately noisy environments. However, they should be used judiciously and, ideally, under the supervision of a hearing professional, to avoid reinforcing sound intolerance.
Sound therapy
Sound therapy is a widely recommended approach to help people with hyperacusis develop their tolerance to everyday sounds. It involves progressively and controlledly introducing ambient or background sounds, using devices or supervised programs, to retrain the brain's reaction to noise.
Approaches such as Tinnitus Retraining Therapy (TRT), desensitization therapy, and Cognitive Behavioral Therapy (CBT) can all be part of a comprehensive treatment plan. These therapies help the brain reinterpret its emotional and physiological response to sound, which reduces discomfort and improves quality of life. An audiologist or hearing professional can guide you through this process and recommend appropriate sound sources and strategies.
Conclusion
In summary, hyperacusis is a hearing disorder that causes normal sounds to be perceived as loud, irritating, or even painful. Although it is associated with several conditions, the true mechanism underlying hyperacusis remains largely unknown. What is known is that treating the underlying cause can relieve hyperacusis; for people whose cause is not identified, symptom management remains the best available care.
Sources:
Tinnitus and hyperacusis involve hyperactivity and enhanced connectivity in auditory-limbic-arousal-cerebellar network | NCBI
Hyperacusis | NCBI
Recovering from Mild Traumatic Brain Injury | BrainLine
