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
Usually, the outward symptoms of Parkinson's are distinctive enough for a doctor to make a diagnosis in the office. There is no blood test or brain scan that confirms the diagnosis. But if you don't respond to the drugs used to treat Parkinson's disease, it’s possible you may have another type of movement disorder that causes the same type of symptoms. Doing additional tests can help your doctor determine if some other problem is causing your parkinsonian symptoms.
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.
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.
In this article
This information is produced and provided by the National
Institute (NCI). The information in this topic may have changed since it was written. For the most current information, contact the National
Institute via the Internet web site at http://
.gov or call 1-800-4-CANCER.
WebMD Medical Reference from Healthwise
March 12, 2014
This information is not intended to replace the advice of a doctor.
Healthwise disclaims any liability for the decisions you make based on this