• Clin Neurol Neurosurg · Dec 2003

    Case Reports

    Yawning despite trismus in a patient with locked-in syndrome caused by a thrombosed megadolichobasilar artery.

    • Michael Krasnianski, Charly Gaul, Stephan Neudecker, Curd Behrmann, Andreas Schlüter, and Martin Winterholler.
    • Department of Neurology, Martin-Luther-University Halle-Wittenberg, Ernst-Grube-Str. 40, D-06097 Halle (Saale), Germany.
    • Clin Neurol Neurosurg. 2003 Dec 1; 106 (1): 44-6.

    AbstractWe report a 62-year-old woman with a locked-in syndrome with bilateral masticatory spasms and persistent trismus, who was still able to yawn. A vascular malformation of the basilar artery-megadolichobasilar artery (fusiform aneurysm, vertebrobasilar dolichoectasia) was determined to be the underlying cause of this rare combination of symptoms. A thrombus in the megadolichobasilaris as well as an almost total pontine infarction were demonstrated on CT- and MRI-scans. Thus, trismus may be associated with locked-in syndrome due to megadolichobasilar artery thrombus, although yawning is still possible.

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