Idiopathic cervical dystonia (CD) is the most common form of focal dystonia with a prevalence of approximately 60 cases per million population.(Nutt et al.,1988). Current oral medical treatments for CD have variable efficacy and often with marked side effects. Botulinum toxin injections may be more effective than pharmacological therapies, and are currently the best available therapeutic option. However, repeat injections, administered by a physician trained in this area are required every 3-4 months.(Brans et al.,1996) This can often be difficult and costly for patients. Furthermore, there are subgroups of patients who simply do not respond to this treatment and between 5-20% of patients may become secondary non responders due to the development of blocking antibodies to the botulinum toxin.(Mejia et al., 2005) Thus, new therapeutic options are required.