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A 29-year-old right-handed woman was seen in the neurology clinic of this hospital because of a 3-year history of involuntary flexion of the left hand and increasing difficulty moving the left foot. Examination revealed dystonic movements and posturing of the left arm, hand, and foot. Brain imaging was normal. During the next 2.5 years, symptoms gradually worsened, and difficulty swallowing and speaking developed. A diagnostic test was performed.
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Tarsy et al. (2010) studied this question.
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