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Psychogenic tremor and related disorders

Bhatia, KP; Schneider, SA; (2007) Psychogenic tremor and related disorders. J NEUROL , 254 (5) 569 - 574. 10.1007/s00415-006-0348-z.

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Abstract

Psychogenic tremor is the most common form (55%) of all psychogenic movement disorders. Almost 75% of presenting patients are female. Onset is often abrupt. Preceding events include work related injuries and other accidents. Important clinical characteristic include variability of direction, amplitude and frequency. A positive entrainment test, presence of the co-contraction sign, absence of finger tremor and slowness of voluntary movements are suggestive of psychogenic origin. Co-morbidity with psychiatric disorders is common and includes somatoform disorders (35%), such as pain, diffuse sensory loss, conversion disorders and depression (14%). One fifth (21%) of patients are involved in litigation or compensation issues. Diagnosis is based on history, clinical signs and investigations. A multimodal approach including neuropsychiatric evaluation and psychotherapy should be offered. Prognosis, however, is relatively poor particularly if the condition has persisted for over a year and in the long-term up to 80-90% of patients continue to have abnormal movements.

Type: Article
Title: Psychogenic tremor and related disorders
DOI: 10.1007/s00415-006-0348-z
Keywords: tremor, psychogenic movement disorder, entrainment, co-contraction sign, distractibility, MOVEMENT-DISORDERS, CLINICAL-FEATURES, PARKINSONISM
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology > Clinical and Movement Neurosciences
URI: http://discovery.ucl.ac.uk/id/eprint/98626
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