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Start free with EleplanHuntington disease-like 1
ORPHA:157941Disease
Also called Early-onset prion disease with prominent psychiatric features · HDL1
What it is
A rare, genetic, human prion disease characterized by adult-onset neurodegenerative manifestations associated with a movement disorder and psychiatric/behavioral disturbances. Patients typically present personality changes, aggressiveness, manias, anxiety and/or depression in conjunction with rapidly progressive cognitive decline (presenting with dysarthria, apraxia, aphasia, and eventually leading to dementia) as well as ataxia (manifesting with gait disturbances, unsteadiness, coordination problems), Parkinsonism, myoclonus, and/or chorea. Additional features may include generalized spasticity, seizures, urine incontinence and pyramidal abnormalities.
Key facts
- Age of onset
- Adult
- Inheritance
- Autosomal dominant
- Classified as
- Disease
Signs and symptoms
Common30–79%
10These ranges are how often a sign appears across everyone diagnosed, not a prediction for one person — most people have some of these and not others. Orphanet also records findings that are specifically absent in this disease; those are in the data but not listed here.
Gene
ICD-10 codes
ICD-10 has no distinct code for most rare diseases, so many are filed under the nearest available one. A shared code identifies the group, not this disease — the ORPHAcode above is what identifies it.
Related health topics
Reached through the ICD-10 categories this disease is filed under, so these describe the broader group rather than this disease specifically.
Cross-references
Orphadata Science: Free access data from Orphanet. © INSERM 1999. Data version 2026-06-23. Available under CC BY 4.0. This is a reference, not medical advice.
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