Sensory alterations in patients with isolated idiopathic dystonia: an exploratory quantitative sensory testing analysis

Abnormalities in somatosensory system are increasingly being recognized in patients with dystonia. The aim of this study was to investigate whether sensory abnormalities are confined to the dystonic body segments or whether there is a wider involvement in patients with idiopathic dystonia. For this...

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Hauptverfasser: Paracka, Lejla (VerfasserIn) , Blahak, Christian (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 17 October 2017
In: Frontiers in neurology
Year: 2017, Jahrgang: 8
ISSN:1664-2295
DOI:10.3389/fneur.2017.00553
Online-Zugang:Verlag, kostenfrei, Volltext: http://dx.doi.org/10.3389/fneur.2017.00553
Verlag, kostenfrei, Volltext: https://www.frontiersin.org/articles/10.3389/fneur.2017.00553/full
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Verfasserangaben:Lejla Paracka, Florian Wegner, Christian Blahak, Mahmoud Abdallat, Assel Saryyeva, Dirk Dressler, Matthias Karst and Joachim K. Krauss

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520 |a Abnormalities in somatosensory system are increasingly being recognized in patients with dystonia. The aim of this study was to investigate whether sensory abnormalities are confined to the dystonic body segments or whether there is a wider involvement in patients with idiopathic dystonia. For this purpose we recruited 20 patients, 8 had generalized, 5 had segmental dystonia with upper extremity involvement, and 7 had cervical dystonia. In total there were 13 patients with upper extremity involvement. We used Quantitative Sensory Testing (QST) at the back of the hand in all patients and at the shoulder in patients with cervical dystonia. The main finding on the hand QST was impaired cold detection threshold (CDT), dynamic mechanical allodynia (DMA) and thermal sensory limen (TSL). The alterations were present on both hands, but more pronounced on the side more affected with dystonia. Patients with cervical dystonia showed a reduced CDT and hot detection threshold (HDT), enhanced TSL and DMA at the back of the hand, whereas the shoulder QST only revealed increased cold pain threshold (CPT) and DMA. In summary, QST clearly shows distinct sensory abnormalities in patients with idiopathic dystonia, which may also manifest in body regions without evident dystonia. Further studies with larger groups of dystonia patients are needed to prove the consistency of these findings. 
650 4 |a Dystonia 
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