Dystonia is an involuntary hyperkinetic movement disorder characterized by simultaneous contraction of agonist and antagonist muscles leading to abnormal postures or movements. Dystonia is classified as isolated when it is the only movement disorder (except tremor). Isolated dystonia can be further classified according to the age of onset: early (age of onset less than 26 years, typically DYT1), late (age of onset greater than 26 years), and mixed early and late onset. DYT13 is one of the two forms with a mixed age of onset (the other being DYT6). DYT13 is characterized by segmental upper body dystonia with myoclonic-like jerks of the neck and shoulders. It was first described in 1997 in a large non-Jewish Italian family. The locus for this disorder was identified in 2001, but the gene has not yet been elucidated.
|Title of host publication||The Curated Reference Collection in Neuroscience and Biobehavioral Psychology|
|Publisher||Elsevier Science Ltd.|
|Number of pages||3|
|State||Published - 1 Jan 2016|
- Geste antagoniste