... dystonia, the evidence is so clear in the secondary dystonias that we believe the same part of the brain is involved in all types. How does dystonia work in the brain? Dystonia is a disorder that has to do with the way we move. The control of our movements is very complicated and involves many areas in the brain. The area of the brain that is involved in dystonia is called the basal ganglia. The basal ganglia is a deep region of the brain that controls the speed of movement and prevents unwanted movements. If there is a small change in the way the basal ganglia works, it can cause movements to occur even if you don't want them to. This small change is not found by medical tests or pictures of the brain on an MRI scan. Even if this deep area of the brain is not working the ...

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