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Tremor on smiling |
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| Authors: | Petra Schwingenschuh MD Carla Cordivari MD Julia Czerny MD Marcello Esposito MD Kailash P Bhatia MD |
| Institution: | 1. Sobell Department of Motor Neuroscience and Movement Disorders, UCL, Institute of Neurology, Queen Square, London, United Kingdom;2. Medical University of Graz, Department of Neurology, Austria;3. Neurophysiology Department, The National Hospital for Neurology and Neurosurgery, Queen Square, London, United Kingdom |
| Abstract: | Facial tremor occurring on smiling is a rare phenomenon and has been described (to the best of our knowledge) in the literature only once. We describe two patients who presented with a bilateral facial tremor that occurred only on smiling and other activation of therisorii muscles and had a high frequency of 9 Hz. One patient additionally suffered from young‐onset Parkinson's disease, whereas the other had no further neurological symptoms or signs apart from this tremor. Anti‐parkinsonian medication was unhelpful for the facial tremor in the patient with Parkinson's disease. Tremor on smiling may be a discrete entity or may be associated in some cases of Parkinson's disease. © 2009 Movement Disorder Society |
| Keywords: | orolingual tremor facial tremor task‐specific tremor smiling |