Essential tremor (ET)

a progressive neurological disorder.

Etiology:

autosomal dominant familial essential tremor gene, FET1, to chromosome 3q13.

Links: The prevalence of Parkinson’s disease and dystonia may be increased in families with essential tremor,

Manifestations:

  •  involuntary rhythmic movements of the limbs, head or neck.
  • tremor of the arms that is apparent during voluntary movements such as eating and writing.

Treatment and Management:

Primidone

propranolol

surgery or injections of botulinum toxin in affected area.

Benedickz, John et al. 1997. Mapping of a familial essential tremor gene, FET1, chromosome 3q13. Nature Genetics. 17: 84-87.

Encarnacion et al. 2002. Management of Essential Tremor. Current Neurology and Neuroscience Reports. 2 (4) 324-330.

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