Involuntary head twitching may range from neck spasms to uncontrolled tremors. Causes may include several movement disorders, such as Tourette syndrome and Parkinson’s disease. Involuntary head ...

Adult-onset dystonia can be acquired, inherited or idiopathic. The dystonia is usually focal or segmental and for a limited number of cases causal treatment is available. In recent years, rapid ...

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Dystonia is a common and disabling movement disorder in humans. It encompasses a variety of different symptoms including torticollis, limb and trunk dystonia, writer's cramp, blepharospasm and ...