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Related Experiment Videos

Gaze-evoked blepharoclonus.

J R Keane

    Annals of Neurology
    |March 1, 1978
    PubMed
    Summary
    This summary is machine-generated.

    Orbicularis clonus, an unusual eye movement disorder, can occur in patients with demyelinating diseases. This persistent symptom did not respond to common epilepsy medications.

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    Area of Science:

    • Neurology
    • Ophthalmology
    • Neuroimmunology

    Background:

    • Demyelinating diseases, such as multiple sclerosis, affect the central nervous system.
    • Orbicularis oculi muscle spasms can manifest in various neurological conditions.

    Observation:

    • Two patients with demyelinating disease developed painful bilateral orbicularis clonus.
    • This involuntary muscle twitching occurred specifically during eccentric gaze.

    Findings:

    • The orbicularis clonus presented with variable intensity but was persistent, lasting for years.
    • Standard treatments like phenytoin and carbamazepine were ineffective in managing the condition.

    Implications:

    • This case highlights an unusual neurological manifestation of demyelinating disease.
    • Further research is needed to understand the pathophysiology and explore alternative treatments for this specific type of eye movement disorder.