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Toxic myoclonus.

J A Obeso, C Viteri, J M Martínez Lage

    Advances in Neurology
    |January 1, 1986
    PubMed
    Summary
    This summary is machine-generated.

    Certain toxins cause encephalopathies with prominent myoclonus, mimicking posthypoxic action myoclonus syndrome. Toxins include bismuth, methyl bromide, anilines, and tetraethyl lead.

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    Area of Science:

    • Neuroscience
    • Toxicology
    • Neurology

    Background:

    • Encephalopathies are brain dysfunctions that can manifest with various neurological symptoms.
    • Myoclonus, characterized by sudden muscle jerks, is a notable neurological sign observed in several encephalopathic conditions.

    Purpose of the Study:

    • To identify toxins associated with encephalopathies presenting with prominent myoclonus.
    • To compare the clinical features of toxin-induced encephalopathies with myoclonus to known neurological syndromes.

    Main Methods:

    • Literature review of documented cases of encephalopathy with myoclonus.
    • Analysis of clinical presentations associated with specific toxin exposures.

    Main Results:

    • Identified several toxins linked to encephalopathies with myoclonus, including bismuth, methyl bromide, anilines in cooking oil, and tetraethyl lead.

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  • Observed that clinical features often resemble the action myoclonus syndrome seen in posthypoxic encephalopathy.

    • Conclusions:

    • Specific toxins can induce encephalopathies with myoclonus as a key feature.
    • The clinical presentation of these toxin-induced encephalopathies shares similarities with posthypoxic action myoclonus syndrome, aiding in differential diagnosis.