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Published on: September 12, 2020
Facial tremor in dystonia
Roberto Erro1, Maria Stamelou2, Tabish A Saifee3
1Sobell Department of Motor Neuroscience and Movement Disorders, UCL Institute of Neurology, London, United Kingdom; Department of Clinical Neurophysiology, National Hospital for Neurology and Neurosurgery, Queen Square, London, United Kingdom; Dipartimento di Scienze Neurologiche e del Movimento, Università di Verona, Italy.
Facial tremor, particularly in the upper and middle face, can occur in patients with idiopathic dystonia. This study reports on eight such cases, detailing tremor characteristics and distribution.
Area of Science:
- Neurology
- Movement Disorders
Background:
- Facial tremor is rarely documented in Parkinson's disease and Essential Tremor.
- Facial tremor has not been previously reported in idiopathic dystonia.
Purpose of the Study:
- To describe facial tremor in patients with idiopathic focal/segmental dystonia.
- To characterize the clinical and electrophysiological features of this tremor presentation.
Main Methods:
- Case series of 8 patients with idiopathic focal/segmental dystonia.
- Clinical observation, video documentation, and electrophysiological recordings were utilized.
Main Results:
- Seven out of eight patients exhibited tremor in the upper/middle facial regions.
- In six patients, tremor extended to the head, lower face, or upper limbs.
- Electrophysiological recordings revealed a slightly irregular tremor at 3-5 Hz.
Conclusions:
- Facial tremor involving the upper/middle face is a potential manifestation in patients with classical idiopathic dystonia.
- This finding expands the known clinical spectrum of dystonia.
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