G Kuhlenbäumer1, F Hopfner2. 1. Klinik für Neurologie, Universitätsklinikum Schleswig-Holstein, Campus Kiel, Christian-Albrechts-Universität Kiel, Arnold-Heller-Str. 3, 24105, Kiel, Deutschland. g.kuhlenbaeumer@neurologie.uni-kiel.de. 2. Klinik für Neurologie, Universitätsklinikum Schleswig-Holstein, Campus Kiel, Christian-Albrechts-Universität Kiel, Arnold-Heller-Str. 3, 24105, Kiel, Deutschland.
Abstract
BACKGROUND: Tremor is a symptom of many diseases and can constitute a disease of its own: essential tremor. OBJECTIVE: The genetics of essential tremor and differential diagnosis of monogenic diseases with the symptom tremor. MATERIAL AND METHODS: Literature search and search of clinical genetics databases, e.g. OMIM, GeneReviews, MDSGene and the German Neurological Society (DGN) guidelines. RESULTS: The genetics of essential tremor remain unresolved in spite of large, adequately powered studies. Tremor is a symptom of differential diagnostic value in many movement disorders. A slight tremor might have been missed or not reported in many descriptions of movement disorders. CONCLUSION: Progress in the genetics of essential tremor probably requires a more detailed phenotyping allowing stratification into phenotypically defined subgroups. Tremor should always be included in the examination and description of movement disorders even if tremor is not a cardinal symptom. Tremor might be helpful in the differential diagnosis of hereditary dystonia, hereditary ataxia, spastic paraplegia and other movement disorders.
BACKGROUND:Tremor is a symptom of many diseases and can constitute a disease of its own: essential tremor. OBJECTIVE: The genetics of essential tremor and differential diagnosis of monogenic diseases with the symptom tremor. MATERIAL AND METHODS: Literature search and search of clinical genetics databases, e.g. OMIM, GeneReviews, MDSGene and the German Neurological Society (DGN) guidelines. RESULTS: The genetics of essential tremor remain unresolved in spite of large, adequately powered studies. Tremor is a symptom of differential diagnostic value in many movement disorders. A slight tremor might have been missed or not reported in many descriptions of movement disorders. CONCLUSION: Progress in the genetics of essential tremor probably requires a more detailed phenotyping allowing stratification into phenotypically defined subgroups. Tremor should always be included in the examination and description of movement disorders even if tremor is not a cardinal symptom. Tremor might be helpful in the differential diagnosis of hereditary dystonia, hereditary ataxia, spastic paraplegia and other movement disorders.
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