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Reversal of Status Dystonicus after Relocation of Pallidal Electrodes in DYT6 Generalized Dystonia

Oterdoom, D. L. Marinus; van Egmond, Martje E.; Ascencao, Luisa Cassini; van Dijk, J. Marc C.; Saryyeva, Assel; Beudel, Martijn; Runge, Joachim; de Koning, Tom J.; Abdallat, Mahmoud; Eggink, Hendriekje; Tijssen, Marina A. J.; Krauss, Joachim K.

Background: DYT6 dystonia can have an unpredictable clinical course and the result of deep brain stimulation (DBS) of the internal part of the globus pallidus (GPi) is known to be less robust than in other forms of autosomal dominant dystonia. Patients who had previous stereotactic surgery with insufficient clinical benefit form a particular challenge with very limited other treatment options available.

Case Report: A pediatric DYT6 patient unexpectedly deteriorated to status dystonicus 1 year after GPi DBS implantation with good initial clinical response. After repositioning the DBS electrodes the status dystonicus resolved.

Discussion: This case study demonstrates that medication-resistant status dystonicus in DYT6 dystonia can be reversed by relocation of pallidal electrodes. This case highlights that repositioning of DBS electrodes may be considered in patients with status dystonicus, especially when the electrode position is not optimal, even after an initial clinical response to DBS.

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Title
Tremor and Other Hyperkinetic Movements
DOI
https://doi.org/10.7916/D82F90DX

More About This Work

Academic Units
Center for Parkinson's Disease and Other Movement Disorders
Published Here
April 10, 2018
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