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Published on: September 12, 2020
The entity of jaw tremor and dystonia
Susanne A Schneider1, Kailash P Bhatia1
1Sobell Department of Motor Neuroscience and Movement Disorders, Institute of Neurology, Queen Square, London, United Kingdom.
Background:
Jaw tremor in the context of dystonia is not well recognized.
Method:
We describe 7 women (average onset age 70) with jaw tremor and dystonia.
Results:
All had features of primary dystonia. Applying MDS criteria for tremor, 3 had "dystonic jaw tremor"; 4 had "jaw tremor associated with dystonia". Drugs were unhelpful. Botulinum toxin injections proved effective in 1 case.
Conclusion:
We propose the entity of "jaw tremor and dystonia". It is distinct from jaw tremor due to other causes including Parkinson's disease and essential tremor.
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