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Related Experiment Videos

Hearing loss in facioscapulohumeral dystrophy.

T Voit, A Lamprecht, H G Lenard

    European Journal of Pediatrics
    |September 1, 1986
    PubMed
    Summary

    Facial-shoulder-scapular muscular dystrophy (FSHD) can cause hearing loss. Early-onset FSHD specifically affects the cochlea, leading to high-frequency hearing impairment in most patients.

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    Area of Science:

    • Neurology
    • Otolaryngology
    • Genetics

    Background:

    • Facioscapulohumeral muscular dystrophy (FSHD) is a genetic disorder affecting muscles.
    • Hearing loss is a potential but not fully understood complication of FSHD.

    Purpose of the Study:

    • To investigate the prevalence and characteristics of hearing loss in patients with early-onset FSHD.
    • To determine if hearing loss in FSHD is related to cochlear dysfunction.
    • To differentiate hearing loss in FSHD from other neuromuscular disorders.

    Main Methods:

    • Audiometric evaluation of patients with infantile or adolescent onset FSHD.
    • Analysis of cochlear pathology in affected patients.
    • Comparison with patients suffering from other muscular dystrophies.

    Main Results:

    • Six out of ten patients with early-onset FSHD exhibited bilateral sloping high-frequency hearing loss (20-90 dB).
    • The primary defect was identified in the cochlea, specifically affecting outer hair cells in the basal turn.
    • No sensorineural hearing loss was observed in 20 patients with other muscular dystrophies or neuromuscular disorders.

    Conclusions:

    • Cochlear dysfunction is a specific and frequent finding in early-onset FSHD.
    • Hearing loss in FSHD is likely due to primary cochlear pathology, not generalized neuromuscular disease.
    • Early-onset FSHD is associated with a distinct pattern of sensorineural hearing impairment.

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