Tremors can range from minor to severe. Tremors can be caused by alcohol abuse , an overactive thyroid , or a stroke. They can also be caused by a variety of neurological conditions. The exact cause of essential tremor is unknown. However, recent research suggests that essential tremor may be triggered by changes in certain areas of the brain, according to the National Institute of Neurological Disorders and Stroke NINDS.
As with most medical conditions, research is ongoing. Genetics can also affect risk. With familial tremor, your child has a 50 percent chance of developing essential tremor if you already live with it. Doctors diagnose essential tremor by observing the tremors and by ruling out other causes. Your doctor may perform a physical exam to evaluate your tremors. There are also treatments that may help relieve your symptoms.
You may not need treatment if your symptoms are minor. Your doctor will advise treatment if your symptoms are severe and interfering with your normal activities. Treatment options include:. You can go to physical therapy to improve coordination and muscle control. Botox injections can also be done in your hands to weaken the muscles and minimize or stop shaking. Surgery is performed when other treatments fail to provide relief. Surgical options include deep brain stimulation and stereotactic radiosurgery.
With deep brain stimulation, small electrodes are placed in the area of your brain that controls movement. These electrodes block the nerve signals that cause tremors. With stereotactic radiosurgery, high-powered X-rays are pinpointed on a small area of the brain to correct tremors. Many people with essential tremor live normal lives. This content does not have an Arabic version. Overview Essential tremor is a nervous system neurological disorder that causes involuntary and rhythmic shaking.
Autosomal dominant inheritance pattern Open pop-up dialog box Close. Autosomal dominant inheritance pattern In an autosomal dominant disorder, the mutated gene is a dominant gene located on one of the nonsex chromosomes autosomes.
Request an Appointment at Mayo Clinic. Share on: Facebook Twitter. National Institute of Neurological Disorders and Stroke. Accessed Nov.
Facts about essential tremor. International Essential Tremor Foundation. Tarsy D. Surgical treatment of essential tremor. Overview of tremor. National Library of Medicine. What is essential tremor? Genetics Home Reference.
Pharmacologic treatment of essential tremor. Essential tremor ET patient handbook. A tremor can occur in any part of the body and at any time. Tremors are not always serious, but in some cases, they may indicate a serious disorder. A muscle spasm is the involuntary contraction of a muscle. A muscle twitch is an uncontrolled fine movement of a small portion of a larger muscle. This twitch may be visible under the skin.
Resting tremors often affect only the hands or fingers. Action tremors occur during movement of the affected body part. Action tremors are further divided into subcategories:. Essential tremors are usually postural or intention tremors.
An essential tremor may be mild and not progress, or it may slowly progress. If the essential tremor progresses, it often starts on one side and then affects both sides within a few years. However, recent studies have connected them to mild degeneration in the cerebellum , which is the part of the brain that controls motor movement.
The onset is usually after age It begins in one limb or on one side of the body and then progresses to the other side. A dystonic tremor occurs irregularly. Complete rest can relieve these tremors. This tremor occurs in people who have dystonia. Dystonia is a movement disorder characterized by involuntary muscle contractions. The muscle contractions cause twisting and repetitive motions or abnormal postures, such as twisting of the neck. These can occur at any age.
The cerebellum is the part of the hindbrain that controls movement and balance. A cerebellar tremor is a type of intention tremor caused by lesions or damage to the cerebellum from:.
It may also be the result of chronic alcoholism or overuse of certain medications. If you have chronic alcoholism or are having trouble managing medications, speak to a healthcare professional. They can help you create a treatment plan that works best for you.
They can also connect you with other professional resources to help you manage your condition. A psychogenic tremor may present as any of the tremor types. Patients with psychogenic tremors often have conversion disorder , a psychological condition that produces physical symptoms, or another psychiatric disease. An orthostatic tremor usually occurs in the legs.
This is a rapid, rhythmic muscle contraction that occurs immediately after you stand. This tremor is often perceived as unsteadiness.
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