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Tremor is an involuntary shaking movement that is repeated over and over. Although it may affect any part of the body, tremor most often affects the hands and head. Your voice may also shake. Sometimes the feet or torso may also shake.
Essential tremor, which sometimes runs in families, is one of the most common types of tremor. It is shaking that is most noticeable when you are doing something like lifting a cup or pointing at an object. The shaking does not occur when you are not moving. Medicine can help reduce the shaking. Brain surgery can be helpful in some cases.
Tremors can also be caused by conditions or medicines that affect the nervous system, including Parkinson's disease, liver failure, alcoholism, mercury or arsenic poisoning, lithium, and certain antidepressants. Side effects from other medicines can also cause tremors.
If you notice a tremor, observe it carefully and note what seems to make it better or worse before calling your doctor. There are some differences between essential tremor and tremor caused by Parkinson's disease. If a cause is discovered, the disease will be treated rather than the tremor.
Call your doctor if:
Some tremors can be treated with medicine or surgery.
Essential tremor that doesn't get better with medicine may be treated with surgery, such as:
|National Institute of Neurological Disorders and Stroke|
|NIH Neurological Institute|
|P.O. Box 5801|
|Bethesda, MD 20824|
The National Institute of Neurological Disorders and Stroke (NINDS), a part of the National Institutes of Health, is the leading U.S. federal government agency supporting research on brain and nervous system disorders. It provides the public with educational materials and information about these disorders.
|American Academy of Family Physicians: FamilyDoctor.org|
|P.O. Box 11210|
|Shawnee Mission, KS 66207-1210|
The website FamilyDoctor.org is sponsored by the American Academy of Family Physicians. It offers information on adult and child health conditions and healthy living. There are topics on medicines, doctor visits, physical and mental health issues, parenting, and more.
|5731 Mosholu Avenue|
|Bronx, NY 10471|
WE MOVE is an Internet resource for movement disorder information. This nonprofit organization is dedicated to educating people about the latest treatment options for neurologic movement disorders. WE MOVE also has information on support groups and hosts discussions and chat rooms on the website.
Other Works Consulted
- Ropper AH, Samuels MA (2009). Tremor, myoclonus, focal dystonias, and tics. In Adams and Victor's Principles of Neurology, 9th ed., pp. 89–110. New York: McGraw-Hill.
- Zesiewicz TA, et al. (2011). Evidence-based guideline update: Treatment of essential tremor. Neurology 77(19): 1752–1755.
|Primary Medical Reviewer||Anne C. Poinier, MD - Internal Medicine|
|Specialist Medical Reviewer||G. Frederick Wooten, MD - Neurology|
|Last Revised||December 5, 2012|
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