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We also investigated atypical motor presentations in relation to triplet CAG expansions. After reviewing the clinical records of two neurological centres, we identified patients with a final, documented diagnosis of HD and selected for study 205 patients according to their onset of motor manifestations. CAG repeats were analysed. Of the 205 patients studied, 15 had atypical motor symptoms at onset. In this group we identified three types of initial clinical manifestations other than chorea: parkinsonism, ataxia and dystonia. We conclude that HD patients may have different motor manifestations at the initiation of the illness. Patients with atypical movement disorders in the early stages have larger CAG expansions and an earlier age at onset than HD patients with typical onset chorea.<\/jats:p>","DOI":"10.1034\/j.1399-0004.2000.580108.x","type":"journal-article","created":{"date-parts":[[2003,3,11]],"date-time":"2003-03-11T11:24:10Z","timestamp":1047381850000},"page":"50-56","source":"Crossref","is-referenced-by-count":68,"title":["Atypical movement disorders in the early stages of Huntington's disease: clinical and genetic 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