This is a registry study to examine the long-term response to Botulinum toxin type A (BoNT-A) injections in subjects with idiopathic cervical dystonia. Focal dystonias are abnormal muscular contractions leading to twisting of body parts and abnormal postures. Cervical dystonia is the most common of the focal dystonias leading to the twisting of the head and neck. Botulinum toxin type A is a medication that has been shown to be effective in treating cervical dystonia. The effect of the treatment is not permanent and usually wears off after about 3 months, but sometimes the benefits may last longer. This is an observational study that involves subject’s medical data to be recorded, stored, and analyzed.
Suffering from idiopathic cervical dystonia
Never been treated with BoNT injection or previously been treated with BoNT injection that had at least a 12-week interval between the last injection and inclusion
Contraindications to any BoNT-A preparations
Number of research visits: 5 visits including baseline visit, 3 follow-up visits, and end of study visit.
Length of participation: 36 months
Number of injections: