It is possible that the main title of the report Essential Tremor is not the name you expected. Please check the synonyms listing to find the alternate name(s) and disorder subdivision(s) covered by this report.
- benign essential tremor (obsolete)
- familial essential tremor
- hereditary tremor
Essential tremor (ET) is a progressive, neurological disorder characterized by tremor, most often of the hands or arms. A tremor is an involuntary, rhythmic, movement of a body part. Tremor may be seen as involuntary shaking or trembling of the affected area. In individuals with ET, other motor symptoms may be present including an unsteady manner of walking due to an inability to coordinate voluntary movements (ataxia). In some cases, affected individuals may also develop a variety of non-motor symptoms including cognitive impairment or personality changes. ET can occur in childhood or adulthood. The exact, underlying cause of ET is not fully understood. In some cases, the disorder runs in families; in others, it occurs in individuals with no previous family history. The cause of ET is most likely multifactorial, which means that several factors, such as genetic and environmental ones, all play a role in the development of the disorder.
Traditionally, ET was viewed as a relatively benign disorder characterized by one symptom, tremor. However, ET can be associated with a variety of psychosocial issues and it can potentially significantly disrupt daily activities and social interactions. Consequently, the term benign was dropped from the name. In addition, researchers have determined that additional non-motor symptoms can be associated with the disorder. Some researchers now believe that essential tremor may actually represent a group of similar, yet distinct, disorders sharing the common trait of kinetic tremor.
WE MOVE (Worldwide Education and Awareness for Movement Disorders)
5731 Mosholu Avenue
Bronx, NY 10471
International Essential Tremor Foundation
P.O. Box 14005
Lenexa, KS 66285-4005
NIH/National Institute of Neurological Disorders and Stroke
P.O. Box 5801
Bethesda, MD 20824
Genetic and Rare Diseases (GARD) Information Center
PO Box 8126
Gaithersburg, MD 20898-8126
Movement Disorder Society
555 E. Wells Street
Milwaukee, WI 53202-3823