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Mov Disord Clin Pract. 2016 Jun 6;4(1):121-124. doi: 10.1002/mdc3.12371. eCollection 2017 Jan-Feb.

Down the Stairs Dystonia-A Novel Task-Specific Focal Isolated Syndrome.

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Department of Medicine Division of Neurology McMaster University Hamilton Ontario Canada.
Department of Clinical Neurological Sciences Western University London Ontario Canada.
Division of Neurology Department of Medicine Dalhousie University Halifax Nova Scotia Canada.
Private Practice Cambridge Ontario Canada.
Department of Neurology Auckland Hospital Auckland New Zealand.
Department of Neurology Concord Repatriation General Hospital Concord New South Wales Australia.
Movement Disorders Unit Department of Neurology Westmead Hospital and Sydney Medical School University of Sydney Sydney New South Wales Australia.
National Parkinson Foundation Center of Excellence and Movement Disorder Program London Health Sciences Center London Ontario Canada.


Adult-onset, task-specific dystonia of the lower limb is a rare occurrence. In this report, the authors present 6 cases of task-specific dystonia manifested only when going down the stairs. These patients were seen by 6 different neurologists from across Canada, Australia, and New Zealand, and all videos were reviewed by 1 movement disorders specialist who made the final diagnosis. Video description of each case is also presented. All 6 patients demonstrated dystonia of 1 of their lower limbs specifically only when going down the stairs. The remainder of the neurological examination was normal, and distractibility, inconsistency, fixed dystonia, or a premonitory urge were absent, making functional movement disorder and tic disorder unlikely. These 6 patients display a distinct, adult-onset, focal isolated dystonia manifested only on going down the stairs that is recognizable as a new task-specific dystonia of the lower extremity.


clinical neurology; dystonia; lower limb dystonia; movement disorders; task‐specific dystonia

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