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Living with Juvenile Huntington disease

A less common form of Huntington disease that begins in childhood or teen years, causing movement, thinking, and mood changes.

Understanding Juvenile Huntington disease

Juvenile Huntington disease is an early-onset form of Huntington disease that begins in childhood or adolescence.

Brain cells in certain areas break down over time. This causes uncontrolled movements, loss of thinking skills, and emotional changes. Onset is before age 20, and it makes up 5 to 10 percent of Huntington disease cases. Children most often inherit the change from their fathers, though sometimes from their mothers.

Signs & symptoms

Symptoms vary from person to person. GARD lists these among the most common:

  • Uncontrolled movements (chorea)
  • Stiffness (rigidity) and slow movement
  • Loss of thinking skills (dementia)
  • Behavior changes and irritability
  • Depression
  • Seizures

Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.

Diagnosis

  1. Talk with your doctor

    Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.

  2. See a specialist

    Specialists who may be involved include brain and nervous system specialists, eye disease specialists and genetic specialists.

  3. Consider genetic testing

    Changes in HTT are linked to this condition. Genetic testing and counseling can help confirm a diagnosis and explain what it means for your family.

  4. Connect with expert centers

    Huntington's Disease Society of America may keep lists of experts for this condition.

Care & treatment

Care team
Brain and nervous system specialists (neurologists); Eye disease specialists (ophthalmologists); Genetic specialists (geneticists)
Expert care
Expert lists: Huntington's Disease Society of America
Treatment
GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
Research
Clinical trials and observational studies may be options. See the research section below.

General information, not medical advice. Your care team makes the decisions.

Everyday life

Living with a rare condition is easier with support.

  • Connect with Huntington's Disease Society of America and other patient organizations
  • Keep notes on symptoms, changes and questions for appointments
  • Ask about patient registries that help research
  • Look into financial aid and travel resources for care visits
Bring these questions to your next doctor visit
What does genetic testing for the HTT gene involve, including for family members?
Which treatments can help with movement, seizures, and mood?
What supports are available for school and daily life?

Quick facts

Symptoms usually startChild and as a Teenager
InheritanceAutosomal Dominant
GenesHTT

Changes in the HTT gene cause this condition, in the form of a repeated stretch of DNA (a trinucleotide repeat). It is autosomal dominant, meaning one changed copy of the gene is enough.

GeneticNeurological

Also known as: jhd; juvenile huntington chorea; juvenile onset huntington disease; juvenile onset huntington's disease

Patient organizations

Source: NIH GARD · Juvenile Huntington diseaseGARD ID 10510 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

You are more than your diagnosis

Perspectives from people navigating life with Juvenile Huntington disease.

Explore the Juvenile Huntington disease blog

Explore research for Juvenile Huntington disease

Explore actively recruiting Juvenile Huntington disease studies with HealthSpark.

HealthSpark

Find actively recruiting studies for Juvenile Huntington disease with HealthSpark. Share your city to explore research near you.

  • Recruiting studies from ClinicalTrials.gov
  • Share your city to look for research near you
  • Eligibility is confirmed by the study team

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Powered by HealthSpark, our AI chat helper · Study information from ClinicalTrials.gov · Eligibility is confirmed by the study team.

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