Dystonia is a neurological disorder which affects approximately 30 to 50 in every 100,000 people worldwide.1
There are two major categories of dystonia.
• Primary dystonia
• Secondary dystonia
A person diagnosed with primary dystonia does not have any neurologic signs or brain abnormalities. In addition, the origin of the illness is unknown. Secondary dystonia is associated with a lesion to the central nervous system often caused by an outside factor such as trauma, cerebral palsy or stroke.
Dystonia can be even further characterized into subcategories.:
• Generalized dystonia affects the entire body
• Focal dystonia affects one area of the body
• Segmental dystonia affects two or more contiguous body areas
• Hemidystonia affects one side of the body