In recent years, decreased sound tolerance has emerged as a critical area of focus within psychiatric and neurological research, bridging the gap between sensory processing and mental health disorders. Defined as a diminished capacity to endure everyday sounds that are ordinarily unproblematic for most individuals, decreased sound tolerance includes conditions such as hyperacusis and misophonia. These subtypes, while distinct in their clinical presentation, are increasingly recognized for their close connections with a wide spectrum of mental health diagnoses, including autism spectrum disorder (ASD), attention deficit hyperactivity disorder (ADHD), anxiety disorders, and obsessive–compulsive disorder (OCD). The complexity of these overlaps has, until now, been inadequately addressed due to compartmentalized approaches focused narrowly on individual diagnostic categories. A groundbreaking transdiagnostic lens now offers a more integrated understanding of the prevalence, etiology, diagnostic strategies, and intervention techniques applicable across these conditions.
Hyperacusis, characterized by an abnormally heightened sensitivity to everyday sounds, manifests as an intense discomfort or pain triggered by sounds that would be considered normal by the general population. Individuals suffering from hyperacusis often describe their auditory experience as overwhelming, unpredictably intrusive, and sometimes physically painful. Misophonia, on the other hand, entails strong negative emotional reactions such as anger, disgust, or anxiety in response to specific, often repetitive, triggers like chewing, breathing, or pen clicking. Unlike hyperacusis, which revolves around sound intensity, misophonia’s hallmark lies in the content and context of auditory stimuli, reflecting an intricate interplay between sensory input and emotional regulation mechanisms. Understanding these distinctions while appreciating their shared pathophysiological and psychological substrates is key to advancing effective treatments.
Studies have consistently highlighted that decreased sound tolerance frequently co-occurs with various neurodevelopmental and psychiatric conditions. Autism spectrum disorder patients, for instance, often report overwhelming experiences with sound, contributing significantly to sensory overload and social withdrawal. Individuals with ADHD similarly display aberrant sensory processing, including heightened distractibility and adverse reactions to auditory stimuli. Anxiety and obsessive–compulsive disorders frequently present with hypervigilance to sensory input, wherein hyperacusis or misophonia amplify distressing symptoms. However, such co-prevalence has traditionally been observed within isolated diagnostic silos, hampering the development of comprehensive models that account for underlying neurobiological mechanisms shared across these conditions.
One major barrier has been the lack of consensus on diagnostic criteria for decreased sound tolerance conditions, which has led to heterogeneous study samples and varied prevalence estimates. Clinical tools have been developed to screen for hyperacusis and misophonia but often lack specificity or transdiagnostic applicability. For example, questionnaires designed for hyperacusis focus on sound tolerance thresholds and auditory discomfort, while misophonia assessments emphasize emotional reactivity to particular sounds. This piecemeal approach limits recognition of overlaps and the potential for shared neural substrates, such as aberrations in central auditory pathways, dysfunctional limbic system responses, or altered connectivity between sensory and emotional processing networks.
At the neurobiological level, there is mounting evidence to suggest that decreased sound tolerance arises from a confluence of altered auditory processing and dysregulated emotional response systems. Functional imaging studies have revealed hyperactivity within the auditory cortex, enhanced connections between auditory and salience networks, and aberrant activation of the amygdala in response to auditory stimuli. These neurophysiological anomalies may underpin the heightened sensitivity and affective reactions characteristic of hyperacusis and misophonia. Importantly, these abnormalities have been documented across individuals with ASD, anxiety disorders, and other clinical presentations, underscoring the utility of transdiagnostic frameworks in identifying shared biological signatures.
The integrated model further posits that decreased sound tolerance is not merely a symptom but a manifestation of broader disruptions in sensory processing and affect regulation. Sensory gating deficits, for instance, may impair the brain’s capacity to filter irrelevant stimuli, leading to sensory overload and heightened stress responses. This is compounded by maladaptive cognitive-emotional interactions, where negative anticipation or catastrophic interpretations exacerbate symptom intensity. Consequently, decreased sound tolerance can significantly impair quality of life, fueling social isolation, reduced occupational functioning, and exacerbation of underlying psychiatric symptoms.
Recent advances in diagnostic methodologies leverage multimodal assessments encompassing behavioral scales, neurophysiological measurements, and neuroimaging. Such integrative approaches enable more precise phenotyping of decreased sound tolerance and facilitate differentiation from peripheral hearing disorders or anxiety-driven hypervigilance alone. Moreover, emerging biomarkers including altered event-related potentials and functional connectivity patterns hold promise for objective confirmation and monitoring of treatment responses in hyperacusis and misophonia.
Therapeutic interventions have traditionally been symptomatic and varied widely in efficacy. Sound therapy, cognitive-behavioral therapy (CBT), and neuromodulation techniques have been employed with some success but often suffer from limited generalizability due to heterogeneous patient populations and incomplete mechanistic targeting. A transdiagnostic perspective encourages development of tailored interventions that simultaneously address sensory processing abnormalities and associated emotional dysregulation. For instance, exposure-based therapies combined with mindfulness and cognitive restructuring aim to recalibrate maladaptive neural circuits and enhance tolerance to sound stimuli.
Pharmacological approaches are nascent but include investigation of agents that modulate neural excitability and neurotransmitter systems implicated in sensory gating and emotional processing, such as GABAergic and glutamatergic pathways. While these remain experimental, they highlight evolving understanding of the neurochemical bases of decreased sound tolerance. Importantly, effective management also calls for interdisciplinary collaboration integrating audiology, psychiatry, neurology, and psychology, to craft holistic care models responsive to the multifaceted nature of these conditions.
The recognition of decreased sound tolerance as inherently transdiagnostic aligns with broader trends in mental health research emphasizing dimensional rather than categorical approaches to psychopathology. Such perspectives facilitate the identification of common mechanistic pathways and vulnerabilities that cut across traditional diagnostic boundaries. Embracing this paradigm shift not only enhances clinical care but also invigorates research agendas toward precision medicine, where interventions can be personalized based on nuanced phenotypic and neurobiological profiles.
As awareness grows around the impact of decreased sound tolerance on diverse clinical populations, public health implications become apparent. Individuals suffering from hyperacusis and misophonia often face stigma, misunderstanding, and barriers to social participation. Enhancing education and training among healthcare providers is paramount for early recognition and intervention. Furthermore, expanding research to include longitudinal studies and large-scale epidemiological assessments will deepen understanding of developmental trajectories, risk factors, and protective mechanisms.
In the context of sensory processing research, decreased sound tolerance challenges conventional notions about the separation of sensory modalities from emotional and cognitive function. It exemplifies how sensory experiences can profoundly influence mental health and vice versa. As such, future investigations must prioritize integrative models that encapsulate neural, psychological, and environmental determinants of sensory-affective interactions. This holistic outlook promises not only improved clinical outcomes but also enriched insights into human brain function.
Researchers are also exploring genetic and epigenetic underpinnings of decreased sound tolerance, evaluating how inherited vulnerabilities intersect with environmental exposures to shape sensory sensitivities. Additionally, advances in neurotechnology such as real-time neurofeedback and brain stimulation open innovative therapeutic avenues, offering the potential to recalibrate dysfunctional neural circuits. These cutting-edge tools, allied with rigorous clinical research, lay the groundwork for breakthroughs in management strategies.
Ultimately, the imperative is clear: the field must transcend fragmented diagnostic frameworks to capture the true complexity of decreased sound tolerance phenomena. By aligning clinical practice with evolving scientific knowledge, and by fostering interdisciplinary collaboration, there is hope to alleviate the pervasive burden these conditions impose. In doing so, mental health care can better accommodate the intricate realities of sensory processing and emotional well-being in modern society.
The synthesis offered by Scheerer and colleagues marks a seminal contribution to this endeavor, advocating for a transdiagnostic approach that simultaneously addresses shared and unique features of hyperacusis and misophonia. Their work catalyzes a paradigm shift, encouraging researchers and clinicians alike to move beyond siloed models and to embrace the intertwined nature of sensory and psychiatric domains. This integrated vision sets a robust foundation for transformative advances in understanding, diagnosing, and treating decreased sound tolerance across the clinical spectrum.
Subject of Research: Transdiagnostic mechanisms underlying decreased sound tolerance conditions such as hyperacusis and misophonia, and their intersection with mental health disorders.
Article Title: Transdiagnostic mechanisms of decreased sound tolerance
Article References:
Scheerer, N.E., Rosenthal, M.Z., Birmingham, E. et al. Transdiagnostic mechanisms of decreased sound tolerance. Nat Rev Psychol (2026). https://doi.org/10.1038/s44159-026-00565-y
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