The entity of jaw tremor and dystonia.
BACKGROUND
Jaw tremor in the context of dystonia is not well recognized.


METHODS
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.


CONCLUSIONS
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.
Schneider
Susanne A
SA
Sobell Department of Motor Neuroscience and Movement Disorders, Institute of Neurology, Queen Square, London, United Kingdom.
Bhatia
Kailash P
KP
Sobell Department of Motor Neuroscience and Movement Disorders, Institute of Neurology, Queen Square, London, United Kingdom.
D017668:Age of Onset; D000368:Aged; D000369:Aged, 80 and over; D004421:Dystonia / Q000150:complications*; D005260:Female; D006801:Humans; D007571:Jaw Diseases / Q000150:complications*; D014202:Tremor / Q000150:complications*