Dystonia

Home » Dystonia » Risk Factors and Causes, Signs and Symptoms, Diagnosis

Risk Factors and Causes

The basal ganglia are groups of cells that are located in the cerebral hemispheres of the brain and contribute to some aspects of voluntary movement. If these cells are compromised or do not communicate effectively with other areas of the body, dystonia can result.

People who are carriers of a gene mutation called DYT1 are at increased risk for some forms of dystonia. Researchers are not certain how this mutation leads to dystonia, but the connection is being studied closely.

Secondary dystonias can be caused by birth injuries, exposure to poisons, trauma, tumors, and stroke.

Signs and Symptoms

Symptoms of dystonia are usually mild at first. The patient may notice tremors or cramps during particular activities (e.g., walking, writing). Spasms in jaw muscles may interfere with the quality of speech. The head may begin moving involuntarily. Often the symptoms start in one area and gradually affect other parts of the body. Eventually, the contractions become more severe. They sometimes level off (plateau) after a few years.

Complications associated with dystonia are widespread because of the various types and range of body parts affected. Depending on the affected area, people who have dystonia can experience severe pain; functional blindness; slurred speech; difficulty eating, swallowing, breathing, and urinating; and limited mobility.

Anxiety, fatigue, and stress can worsen symptoms. Dystonia is a condition that is frequently misunderstood and some patients feel stigmatized and perceived as being cognitively deficient or incapable of managing their lives.

In some cases, awkward, uncomfortable postures become permanent. Dystonic storms, which are especially intense periods of muscle contractions, can also occur.

Diagnosis

Dystonia usually is diagnosed by a neurologist, and the diagnosis is based on many factors. Other illnesses and disorders that have similar symptoms (e.g., Parkinson's disease, Huntington's disease, Wilson disease, Leigh disease, lipid storage disease) must be ruled out before the diagnosis is made.

Diagnosis involves taking a medical history and performing a physical examination. Reviewing the patient's medical history is important, since approximately 44% of patients have a family history of movement disorders.

During the physical exam, neurologists look for causes of secondary dystonia, such as stroke, head injury, or exposure to poison or drugs. The patient’s medication history also is considered, since some drugs (e.g., antihistamines, antiepilectics, caffeine, antidepressants, oral contraceptives, lithium, cocaine) can cause dystonia as a side effect.

Laboratory tests also can be used to help diagnose dystonia. Blood and urine tests can determine toxin or drug levels and liver function tests and analyses of cerebrospinal fluid can also be useful. If there is a family history of dystonia, genetic testing is conducted to look for the DYT1 gene mutation. Imaging tests (e.g., MRI scans, CT scans) can be used to detect a tumor or stroke, which may indicate secondary dystonia.

© 1998-2010 Healthcommunities.com, Inc. All Rights Reserved.

Dystonia Resources

	Join Our Dystonia Forum Do you have a question, want to share medical advice, or just need to discuss your situation with someone else having a similar experience? The healthchannels forum is a resource for everyone to share and discuss their health and medical needs with others.	Advertising Disclaimer
	Living with...Share your story Do you have a personal health story that you would like to share with others? As a source of free patient education, our goal is to provide our users with trustworthy information and support from others. That's why we've started our "Living with..." sections.
	Our "Living With..." support pages are a place to share experiences about living with a certain condition, disease, disorder, or illness and for loved ones of those dealing with health-related issues. Many people, especially when newly diagnosed, find comfort in knowing that others are having a similar experience. Help others by sharing your story. View stories already submitted.
	Stay Updated Sign up for our newsletter and receive important updates on the medical conditions that are most important to you.
To quickly access health information from your website's browser, download Healthcommunities.com's healthchannels toolbar.