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Tremor on smiling
Author(s) -
Schwingenschuh Petra,
Cordivari Carla,
Czerny Julia,
Esposito Marcello,
Bhatia Kailash P.
Publication year - 2009
Publication title -
movement disorders
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.352
H-Index - 198
eISSN - 1531-8257
pISSN - 0885-3185
DOI - 10.1002/mds.22666
Subject(s) - essential tremor , parkinson's disease , physical medicine and rehabilitation , psychology , facial expression , facial muscles , resting tremor , neurological disorder , disease , audiology , medicine , central nervous system disease , neuroscience , communication , pathology
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