Prevalence, Phenomenology, and Impact of Misophonia in a Nationally Representative Sample of U.S. Adults.

Misophonia is characterized by decreased tolerance for and negative reactions to certain sounds and associated stimuli, which contribute to impairment and distress. Research has found that misophonia is common in clinical, college, and online samples; yet, fewer studies have examined rates of misophonia in population-based samples. The current study addresses limitations of prior research by investigating misophonia prevalence, phenomenology, and impairment in a large, nationally representative sample of adults in the United States. Probability-based sampling was used to administer a survey to a representative sample of U.S. households. Data were adjusted with poststratification weights to account for potential sampling biases and examined as weighted proportions to estimate the outcomes. The sample included 4,005 participants (51.5% female; 62.5% White). Sensitivity to misophonia sounds was reported by 78.5% of the sample, and 4.6% reported clinical levels of misophonia. Results demonstrated significant demographic differences in misophonia symptom severity. Specifically, significantly higher misophonia symptoms were observed for participants who identified as female, less than 55 years old, less than a high school education, never married, lower income, and those working part time, compared to each of the respective comparison groups. Those with clinically significant misophonia symptoms reported that symptoms often onset in childhood and adolescence, were persistent, and contributed to severe impairment in at least one life domain. These findings provide a prevalence estimate of misophonia in the general population of the United States and inform our understanding of who is affected by misophonia. General Scientific Summary: Misophonia affects 4.6% of individuals in the United States. This study found that misophonia symptoms are higher among individuals who identify as female, less than 55 years old, less than a high school education, never married, lower income, and those working part time. [ABSTRACT FROM AUTHOR]