
Dystonia is a movement disorder that causes the muscles to contract and spasm involuntarily. The neurological mechanism that makes muscles relax when they are not in use does not function properly. Opposing muscles often contract simultaneously as if they are “competing” for control of a body part. The involuntary muscle contractions force the body into repetitive and often twisting movements as well as awkward, irregular postures. There are approximately 13 forms of dystonia, and dozens of diseases and conditions include dystonia as a major symptom.

Although there are multiple forms of dystonia and the symptoms of these forms may outwardly appear quite different, the element that all forms share is the repetitive, patterned, and often twisting involuntary muscle contractions.
Dystonia is a chronic disorder, but the vast majority of dystonias do not impact cognition, intelligence, or shorten a person’s life span. The main exception to this is dystonia that occurs as symptom of another disease or condition that can cause such complications.

There are estimated to be 40,000 people living with dystonia in the UK.

- Dystonia explained
Your questions answered on dystonia, its causes and what to do if you think you have the condition. - Types of dystonia
Dystonia can affect just one part of the body or several different areas. This section contains information on the different types of dystonia. - Treatments
Read about treatments for dystonia, including botulinum toxin. Other factsheets
Information on other aspects of living with dystonia.
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