Abstract
Stair‐specific FTSD in the lower limb is very rare. Most patients show dystonic posture when walking downstairs rather than upstairs.
Keywords: downstairs, dystonia, kicking movement, lower limb, task‐specific
Stair‐specific FTSD in the lower limb is very rare. Most patients show dystonic posture when walking downstairs rather than upstairs.
Dystonia is a neurological disorder that causes involuntary, excessive muscle contraction. We report a 59‐year‐old woman with focal task‐specific dystonia (FTSD) when going downstairs.
In her early 20s, she exhibited a weird movement on her leg when descending stairs. Her symptom was characterized by a patterned “kicking movement” only when walking downstairs (Video [Link], [Link]). Neurological examination and brain MRI showed no abnormality. Stair‐specific FTSD is a rare clinical entity. Most patients show dystonic posture when walking downstairs, and two phenotypes (kicking and lifting type) have been described. 1 , 2 Pharmacological intervention usually fails, but the symptoms remain unchanged over a long time.
CONFLICT OF INTEREST
None declared.
AUTHOR CONTRIBUTIONS
TH: involved in the acquisition of data, supervised the study, analyzed and interpreted the data, and wrote the paper.
Supporting information
Video S1
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Hasegawa T. An unusual cause of difficulty in walking downstairs: Focal task‐specific dystonia in the lower limb. Clin Case Rep. 2020;8:1595–1595. 10.1002/ccr3.2894
REFERENCES
- 1. Baik JS, Ma HI, Lee PH, Taira T. Focal task‐specific lower limb dystonia only when walking stairs: is it a new disease entity? Front Neurol. 2019;10:1081. [DOI] [PMC free article] [PubMed] [Google Scholar]
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Supplementary Materials
Video S1
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