It appears from the literature that people who are carriers of the gene for dystonia may be more likely to have trauma as a triggering factor for the development of dystonia. There are legal aspects of trauma-induced dystonia that have to be dealt with as well. It's a gray area at this point. On first appearance, dystonia is a movement disorder. It is characterized by abnormal postures and movements.
Sensation seems normal.
There are clues, however, that sensory function may not be completely normal and that sensory features are important. Since the sensory system is an important influence on the motor system, abnormalities of the sensory system could be relevant in causing motor dysfunction. Sensory tricks can relieve a dystonic spasm. Such tricks are seen in all forms of dystonia. On the other hand, sensory stimulation might trigger dystonia.