National Organization for Rare Disorders, Inc.
It is possible that the main title of the report Hyperekplexia is not the name you expected.
Hyperekplexia is a rare hereditary, neurological disorder that may affect infants as newborns (neonatal) or prior to birth (in utero). It may also affect children and adults. Individuals with this disorder have an excessive startle reaction (eye blinking or body spasms) to sudden unexpected noise, movement, or touch. Symptoms include extreme muscle tension (stiffness or hypertonia) that prevent voluntary movement and can cause the affected person to fall stiffly, like a log, without loss of consciousness. Exaggeration of reflexes (hyperreflexia), and an unstable way of walking (gait) may also occur. Hyperekplexia is usually inherited as an autosomal dominant trait, but autosomal recessive or rarely, X-linked inheritance, has also been reported.
Hyperekplexia is frequently misdiagnosed as a form of epilepsy so the process of getting an accurate diagnosis may be prolonged Treatment is relatively uncomplicated and involves the use of anti-anxiety and anti-spastic medicines Physical and cognitive therapy are supplemental treatment options.
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Movement Disorder Society
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NIH/National Institute of Neurological Disorders and Stroke
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For a Complete Report
This is an abstract of a report from the National Organization for Rare Disorders (NORD). For a full-text version of this report, go to www.rarediseases.org and click on Rare Disease Database under "Rare Disease Information".
The information provided in this report is not intended for diagnostic purposes. It is provided for informational purposes only.
It is possible that the title of this topic is not the name you selected. Please check the Synonyms listing to find the alternate name(s) and Disorder Subdivision(s) covered by this report.
This disease entry is based upon medical information available through the date at the end of the topic. Since NORD's resources are limited, it is not possible to keep every entry in the Rare Disease Database completely current and accurate. Please check with the agencies listed in the Resources section for the most current information about this disorder.
Last Updated: 3/19/2013
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