Hiperacusia: Sección tipos de hiperacusia: Hiperacusia en niños

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Hyperacusis, sound annoyance, and loudness hypersensitivity in children

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Claudia Barros Coelho^{1, ,} , Tanit Ganz Sanchez¹ and Richard S. Tyler²

¹ Department of Otolaryngology of the University of São Paulo Medical School, São Paulo, Brazil
² Departments of Otolaryngology Head and Neck Surgery, and Speech Pathology and Audiology, University of Iowa, Iowa City, IA, USA

Abstract

The objective of the present study was to estimate the prevalence of hyperacusis among school-aged children.

We define hyperacusis as lowered loudness discomfort levels (LDL) associated with an abnormal annoyance to sounds.

We used questionnaires, interviews, and estimates of LDL in a study of 506 children from 5 to 12 years of age from 15 different schools.

Participants with LDL in the lowest 5th percentile were classified as having loudness hypersensitivity; an abnormal annoyance to sounds if they responded “yes” to the question “Are you bothered by any kind of sounds or noise?” could describe the sound, and were able to identify at least 10 sounds from a list of 20 as being annoying.

Phonophobia was defined as a fear of sound.

Children with LDL in the lowest 5th percentile typically had LDLs lower than 90 dB HL; 42% of the participants in this group were bothered by sounds and 3.2% had hyperacusis.

Fifty percent of the participants with hyperacusis had tinnitus and mild hearing loss in the left ear was an associated risk factor.

Phonophobia was experienced by 9% of the children. It is concluded that hyperacusis in children is prevalent, and should be considered in clinical examinations.

Keywords: hyperacusis; tinnitus; loudness annoyance; children; cross-over study

Fig. 1. Classification criteria for interview data on sound reactions.

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Table 1. Prevalence studies on hyperacusis on pediatric population

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Table 2. Prevalence studies on hyperacusis among adults

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Table 3. Average loudness discomfort levels characteristics (n=501)

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Table 4. Responses only from children who identified 10 or more sounds as being annoying

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Table 5. Annoyance and loudness discomfort levels including frequencies of 0.25, 0.5, 1, 2, 3, 4, and 6 kHz
Note: Number in parenthesis represents the percentage of total sample (n=506).

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Table 6. Characteristics from the total sample and from children classified as having hyperacusis (criteria: bothered and annoyed by sounds and LDLs in the 5th percentile at least in one frequency at least in one ear)

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Table 7. Risk factors for hyperacusis on a multivariate regression model analysis

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Corresponding author. Tel.: +1 5551 3710 2610; Fax: +1 5551 3710 2610

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Fuente :Progress in Brain Research
Volume 166, 2007, Pages 169-178
Tinnitus: Pathophysiology and Treatment