A 33-year-old woman developed exercise-induced limb and trunk dystonia with marked diurnal fluctuations. Treatment with levodopa improved her symptoms considerably but incompletely. Molecular genetic analysis revealed a mutation in GTP cyclohydrolase 1 (GCH1). This report illustrates the variability of Segawa disease and underlines the importance of a levodopa test in patients with uncommon dystonic symptoms.
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| http://dx.doi.org/10.1002/mds.21377 | DOI Listing |
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