Tremors are a type of shaking movement.
Causes, incidence, and risk factors
Tremors are caused by problems with the nerves supplying certain muscles. They can affect the whole body, or just certain areas (such as hand tremor ). Disorders where tremor is 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) Other disorders, such as Parkinson's disease , as well as other illnesses may cause tremors along with other symptoms.
Signs and tests
Tests depend on the suspected cause of the tremor.
Treatment
Treatment may not be required if the tremors are mild and do not interfere with daily activity. If tremors are thought to be drug induced, cessation of the offending medication is usually sufficient to stop the tremor. Medications to treat tremor are variable because of individual responses to medications. Medications that may reduce tremors include propranolol, Mysoline and other anticonvulsants, and mild tranquilizers. Caffeine (in substances such as coffee and soda) and other stimulants should be avoided because they commonly worsen tremors. If tremor is severe and not responsive to medication, surgery may be performed to reduce tremor.
Expectations (prognosis)
See the specific disorders.
Complications
If it is severe, tremors can interfere with activities, especially fine motor skills (such as writing). Speech is occasionally involved. Medications can cause side effects.
Calling your health care provider
Call for an appointment with your health care provider if you have a persistent, unexplained tremor; or if tremors are interfering with your ability to perform daily activities.
Prevention
See the specific disease.