Tremor

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Tremors are a type of involuntary shaking movement.

Tremors are caused by problems with the nerves supplying certain muscles. They may affect the whole body or just certain areas, as with hand tremor).

Disorders with tremor as the primary symptom include:

• Familial tremor (runs in families)
• Essential tremor (no known cause)
• Drug-induced tremor (drugs known to induce tremor include valproic acid, lithium, and cyclosporine)

Review Date: 08/26/2006
Reviewed By: Gail A. Kang, M.D., San Francisco VA Parkinson's Disease Research, Education, & Clinical Center, San Francisco, CA. Review provided by VeriMed Healthcare Network.