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Related Experiment Videos

Vertigo and dizziness of functional origin

L E Afzelius, N G Henriksson, L Wahlgren

    The Laryngoscope
    |April 1, 1980
    PubMed
    Summary

    Approximately 50% of vertigo patients have a functional cause, often seen in younger females. Functional vertigo differs in sensation, duration, and nystagmus response compared to non-functional vertigo.

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    Area of Science:

    • Otolaryngology
    • Neurology
    • Psychosomatic Medicine

    Background:

    • Vertigo is a common complaint in otology consultations.
    • Identifying the source of vertigo is crucial for effective treatment.
    • Functional vertigo presents unique diagnostic challenges.

    Purpose of the Study:

    • To investigate the prevalence and characteristics of functional vertigo.
    • To differentiate functional vertigo from vertigo of somatic origin.
    • To identify key clinical features distinguishing functional vertigo.

    Main Methods:

    • Retrospective analysis of patient consultations for vertigo.
    • Clinical assessment of vertigo symptoms, including sensation, duration, and triggers.
    • Evaluation of nystagmus response to eye closure.

    Main Results:

    • Functional vertigo identified in 50% of patients, more common in young females.
    • Functional vertigo described as internal head turning; somatic vertigo as external spinning.
    • Functional vertigo often fluctuating/continuous; somatic vertigo 2-5 hr duration.
    • Eye closure released nystagmus in functional vertigo cases.

    Conclusions:

    • Functional vertigo is a significant diagnosis in otology, affecting 50% of patients.
    • Distinct sensory, temporal, and oculomotor features aid in differentiating functional from somatic vertigo.
    • Further research into the pathophysiology and management of functional vertigo is warranted.

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