Misophonia

Why misophonia produces anger rather than fear

A trigger arrives and what follows is extreme irritation, anger or disgust, less often rage or panic, dressed in the furniture of sympathetic arousal: the pulse climbs, the muscles tighten, the skin sweats. Fear is not the usual report, which is what separates it from phonophobia, the fear of sound.

Loudness does not predict a reaction. The sound's pattern does, and above all what the sound means to the person hearing it, which is why a barely audible chew outranks a passing lorry. Hyperacusis, the other well known disorder of sound tolerance, tracks the physical properties of a stimulus, its intensity and its frequency. Misophonia tracks source and significance, and that was the line the Jastreboffs were drawing when they named it.

One observation does more work than any other in separating misophonia from the rest of audiology. Most people who cannot bear the sound of chewing can chew without difficulty. A sound made by the listener is either no trigger at all or a far weaker one than the identical sound from somebody else, and no account resting on the acoustic signal alone has anywhere to put that.

Severity runs from mild and sub-clinical to disabling, and the vocabulary has split to match: some research groups reserve misophonic disorder for the impairing form and misophonic reactions for the version that disrupts nobody's day. Most adults with it know the response is out of proportion to the occasion, and the distance between knowing that and being unable to stop is where the shame and the self-hatred reported alongside it come from. Depression, anxiety, phonophobia, self-harm and suicidality are all described as developing secondary to it. On the wider damage the encyclopedia's own sentence runs:

Studies have shown that misophonia can cause problems in school, work, social life, and family

No study is named.

Where the word misophonia comes from

Greek misos, hate, and phone, voice or sound, which comes out loosely as hatred of sound. Pawel Jastreboff and Margaret M. Jastreboff coined it in 2001 with help from the classical scholar Guy Lee, introduced it in an article of theirs titled "Hyperacusis", and expanded on it in the newsletter of the International Tinnitus and Hyperacusis Society. A peer-reviewed journal carried it for the first time in 2002.

The name marks a boundary rather than an experience. What the Jastreboffs needed was a term that could not be confused with hyperacusis or with phonophobia, and hatred of sound does that job while misdescribing the condition entirely. The auditory world at large goes unremarked. A short list of sounds is unbearable.

Before 2001 the usual label was selective sound sensitivity syndrome, shortened to 4S and coined by the audiologist Marsha Johnson. Others each had a turn:

• soft sound sensitivity symptom
• decreased sound tolerance
• sound-rage
• Conditioned Aversive Response Disorder, proposed later as a name wide enough to take in the visual triggers too

None held. Misophonia is what researchers, clinicians, journalists and the people who have it all say.

Then it sat unused. For twelve years the clinical and research literature barely described the condition, until psychiatrists at Amsterdam University Medical Center published a detailed case series in 2013 and proposed misophonia as a new psychiatric disorder with criteria attached. Schröder and colleagues coined misokinesia in the same paper, for the identical reaction to a repeated movement seen rather than heard.

Which sounds and sights trigger misophonia

Mouth, nose and throat sounds lead every list, in clinics and in the general population alike: chewing, crunching, slurping, sniffing, throat clearing. Behind them come repetitive noises made by people or by objects, typing and pen clicking and a ticking clock, and then sounds made by animals.

The Duke Misophonia Questionnaire sorts triggers into fourteen groups and the last contains no sound at all. Seeing somebody reach into a bag of crisps qualifies, as does watching a person eat on a television with the volume down. Misokinesia takes the rest of the visual set: a shaking foot, swinging arms, hair being twirled. What a sound is taken to mean matters as much as what it is: one of the five response dimensions the S-Five questionnaire produced is externalising appraisal, which blames the person making the noise and treats certain sounds as bad manners nobody should commit.

One reported response has no obvious place in any of that. The article records a feeling of unwanted sexual arousal on encountering a trigger, likens it to the groinal response known from obsessive-compulsive disorder, and calls it not uncommon or unusual. No frequency is given, no study is named, and nothing later returns to it.

The first misophonic reaction usually arrives young, often between nine and thirteen, with cases reported at two and adult onset documented as well, and it commonly begins with somebody in a close relationship, or with a pet. All of that is stated and none of it is attributed.

How common misophonia is

Representative national surveys have been run more than once and their results do not sit anywhere near one another. Asked whether any misophonic trigger sound produced a negative reaction at all, 33 per cent said yes in one, 79 per cent in another and 96 per cent in a third, a spread wide enough to establish that the three were not asking the same question.

Clinically significant rates are lower and no more consistent:

• an online representative study in the United Kingdom put a substantial burden at 18 per cent, and that is the figure with a press trail: the BBC, Medscape and Medical Xpress all carried it
• household interviews in Ankara returned 13 per cent
• a United States web panel returned 5 per cent, but only because it demanded a clinical score on two instruments rather than one; on the single measure a German household study used, the same American sample came out at 14 per cent
• that German household study reported 5 per cent on one instrument and 2 per cent when two were required
• three studies using probability-based sampling put the condition between 4.6 and 12.8 per cent of adults

The populations are not what disagree. The instruments are, and behind the instruments the threshold, and setting a threshold is the work of a diagnostic manual that does not list the condition.

Not one of those studies is named. Wikipedia gives each a country, a sampling method and a number, and no author, no year and no journal, so a reader who wants to know which German study is which has nowhere to go. The same holds for the two figures offered as evidence that misophonia is not culture-bound, 6 per cent among Chinese university students and 24 per cent among Iranian ones. Whether women are affected more often is unsettled.

Which models try to explain misophonia

Peripheral hearing is typically normal in people with misophonia, so whatever is happening is happening past the ear. The first attempt at a mechanism was the Jastreboffs' neurophysiological model of 2014, which held that the central auditory system in misophonia has unusually strong functional connections to limbic and autonomic areas, and that overactivity downstream of them produces the emotion and the physical symptoms. Wikipedia calls the model entirely speculative and built on its authors' clinical experience rather than on neuroscientific data, and notes that it is the reasoning underneath tinnitus retraining therapy, which the same page describes as unproven. Imaging has not found the connectivity it requires, at rest or during a trigger, and it has nowhere to put a trigger that is not a sound.

Sukhbinder Kumar and colleagues at the University of Iowa published in 2024 what other researchers have since called the action perception model, or the Berger-Gander-Kumar model. Hearing or seeing an action builds a motor representation of it, probably by way of the mirror neuron system; in misophonia that representation is abnormally strong, and it drives a hyperactive anterior insula, which passes the signal to the amygdala and to the autonomic centres of the brainstem.

Two things recommend it. A motor representation is indifferent to which sense delivered it, so a visual trigger stops being an anomaly. And it explains mimicry, which older accounts have nowhere to file: Kumar's group found that 46.7 per cent of people with misophonia copy the trigger sound, and since the anterior insula is engaged when a person performs the opposite of an imitated movement, mimicking may generate an error signal that damps the insula down.

Two things count against it. Its predictions are largely untested, to the point that Wikipedia calls it a just-so story until they are. And it applies only to sounds another person makes, which leaves the ticking clock and the humming air conditioner exactly where they were. Genetics contributes one finding and it is unpublished: a locus associated with how people answer a single question about feeling rage at the sound of chewing.

Why no misophonia treatment counts as evidence-based

No misophonia treatment currently qualifies as evidence-based, which is a stronger statement than it looks, because trials have been run. Cognitive behavioural therapy has the most behind it: a group-based programme went through a randomised clinical trial and produced symptom reductions still present a year later, and a second randomised trial tested a CBT-based phone application to similar effect. Dialectical behaviour therapy, acceptance and commitment therapy and medication appear only in case reports and case studies, the drugs most often sertraline and fluoxetine.

One line reverses the standard answer for a specific phobia. Habituation-based exposure therapy, the workhorse of that field, is not recommended for misophonia, and no name is attached to the recommendation. Counterconditioning, which pairs a trigger with something pleasant to break the association, was used infrequently by participants in a CBT trial and rated less useful than the rest of the programme. What they rated highest was relaxation, training in shifting attention away from a trigger, and peer support. Most self-management outside a clinic is avoidance, and hearing protection is common enough that the community rates it entirely appropriate, while clinicians worry that avoiding triggers feeds the intolerance.

What follows from misophonia having no diagnostic code

Because neither manual lists it, misophonia is classified as neither a hearing disorder nor a psychiatric one, and the argument over which it should be is live. A tentative placement on the obsessive-compulsive spectrum has been proposed and called premature by the people proposing it. Doctors attempting a diagnosis have mistaken the symptoms for an anxiety disorder, for bipolar disorder and for OCD, and many are said to be unaware of the condition altogether, with no survey behind that claim either.

Measurement is correspondingly thin: a 2021 review found three misophonia instruments with published psychometric properties, all adult self-report, and rated that evidence limited, while unvalidated questionnaires circulate freely online.

What exists in place of a manual entry is a definition by committee. In 2022 an international panel of misophonia experts published a consensus definition, paid for by the Misophonia Research Fund. Clinicians and researchers adopted it widely, and it is still not universally accepted within the field.

The gap has consequences that are not academic. Misophonia is not among the thirteen disabilities recognised in the United States under the Individuals with Disabilities Education Act, so a child cannot obtain an individualised education plan on the strength of it, though accommodations are available under a 504 plan.

The rest was built by the people who needed it. soQuiet, Misophonia Hub and Teens for Education + Advocacy for Misophonia share resources, and Duke University's Center for Misophonia and Emotion Regulation ran a workshop for high school students called PRIMER in 2025. A documentary, Quiet Please, came out in 2016, and the conductor in Tár has the condition in 2022. In 2020 a team of misophonia researchers were given the Ig Nobel Prize in medicine, the citation reading "for diagnosing a long-unrecognized medical condition".

soQuiet founded World Misophonia Awareness Day in 2024 and set it on 9 July, the birthday of Michelle Del Valle, who was seventeen when she took her own life.