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Diseases

Genetic and Rare Diseases Information Center (GARD)

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Juvenile Huntington disease


Other Names for this Disease
  • Huntington disease, juvenile onset
  • JHD
  • Juvenile onset HD
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Symptoms


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What are the signs and symptoms of Juvenile Huntington disease (HD)?

A common sign of juvenile HD is a rapid decline in school performance. Symptoms can also include subtle changes in handwriting and slight problems with movement, such as slowness, rigidity, tremor, and rapid muscular twitching, called myoclonus. Several of these symptoms are similar to those seen in Parkinson's disease, and they differ from the chorea seen in individuals who develop the disease as adults. People with juvenile HD may also have seizures and mental disabilities. The earlier the onset, the faster the disease seems to progress. The disease progresses most rapidly in individuals with juvenile or early-onset HD, and death often follows within 10 years.[1]
Last updated: 3/15/2011

References
  1. Huntington Disease. National Institute of Neurological Disorders and Stroke (NINDS). August 2010; http://www.ninds.nih.gov/disorders/huntington/detail_huntington.htm. Accessed 3/15/2011.