Huntington Disease Like 1 C1864112
A rare inherited brain disorder causing progressive movement problems, cognitive decline, and psychiatric changes. Similar to Huntington disease but caused by a different gene mutation. Management involves medications and supportive therapies.
Key facts at a glance
- ICD-10
- G43.909
- ICD-11
- 8A00.0
- Body system
- neurologic
- Severity
- severe
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Warning signs - seek immediate care
Seizures
Chorea
(neurologic)Generalized symptoms
(neurologic)Significant symptoms that substantially affect daily functioning.
Frequency: Common at all stages
Behavioral changes
(neurologic)Dysarthria
(neurologic)Diagnosis and tests
How this condition is diagnosed and what test results mean.
Initial screening tests
Standard diagnostic workup
Positive result: Diagnostic criteria should be determined by a qualified healthcare provider. [Content pending medical review.]
Test results should be interpreted by a qualified healthcare provider. [Content pending medical review.]
Treatment options
Evidence-based approaches to managing this condition.
First-line treatments
Pharmacological management with first-line agents
Active treatment with regular monitoring by a healthcare provider is recommended.
Symptomatic pharmacotherapy
Dopamine-modulating agents and other medications to address chorea, psychiatric symptoms, and movement disorders characteristic of HDL1. Response varies by individual.
Psychiatric care
Management of behavioral changes, depression, anxiety, and psychosis that commonly accompany HDL1. May include psychotherapy and psychopharmacology.
Additional treatment options
Movement and balance therapy
Physical therapy focused on gait training, balance, and fall prevention as chorea and dystonia progress. Helps maintain function and safety.
physical_therapySafety and environmental adaptations
Home modifications, assistive devices, and caregiver education to manage progressive functional decline and ensure patient safety.
lifestyleMultidisciplinary supportive care
Coordination of neurology, psychiatry, speech therapy, and social services to address the complex needs of HDL1 patients throughout disease progression.
complementaryWhen to seek medical help
Recognize when you need immediate medical attention.
See a doctor within 24 hours
Moderate to severe symptoms that may indicate worsening of this condition. Prompt medical evaluation is recommended.
Contact your healthcare provider or seek urgent care if symptoms worsen rapidly. Go to the emergency department for life-threatening symptoms.
Frequently asked questions
Common questions about this topic.
What is Huntington Disease Like 1 C1864112?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
generalMedication Comparisons
Compare medications used to treat Huntington Disease Like 1 C1864112. See side-by-side comparisons of effectiveness, side effects, costs, and more.
View Medication ComparisonsThis information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 25, 2026. · Read our editorial policy