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Related Experiment Videos

[The clinical study of functional deafness].

C Matsuki

    Nihon Jibiinkoka Gakkai Kaiho
    |September 1, 1989
    PubMed
    Summary

    Functional deafness, often affecting females, shows increasing trends and distinct age peaks. Diagnosis requires careful audiological evaluation, considering psychological factors.

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    Area of Science:

    • Audiology
    • Psychology
    • Otolaryngology

    Context:

    • This study analyzes 98 cases of functional deafness over 13 years.
    • An increasing incidence of functional deafness was observed in the last decade.
    • Functional deafness appears more prevalent in females than males, with two distinct age peaks.

    Purpose:

    • To investigate the characteristics, diagnostic methods, and potential causative factors of functional deafness.
    • To evaluate the utility of pure tone audiometry, Békésy audiometry, and auditory brainstem response (ABR) in diagnosing functional deafness.
    • To identify psychological and otological triggers associated with functional deafness.

    Summary:

    • Pure tone audiograms typically revealed bilateral, symmetrical, sensorineural hearing loss (30-40 dB), often flat or sloping.
    • Békésy audiometry was highly effective, with 90% of cases showing Type V patterns.
    • Auditory brainstem response (ABR) aids diagnosis, emphasizing the need for suspicion and identifying discrepancies across hearing tests.
    • Psychological issues, particularly related to school and social interactions, were identified as significant causative factors, with otological episodes acting as triggers.

    Impact:

    • Highlights the importance of a comprehensive audiological assessment, including Békésy audiometry and ABR, for accurate diagnosis.
    • Underscores the role of psychological factors and social stressors in the etiology of functional deafness.
    • Suggests potential disturbances in loudness recognition in patients with functional deafness, evidenced by consistent higher thresholds in repeated audiograms.

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