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Start free with EleplanNon-specific early-onset epileptic encephalopathy
ORPHA:442835Disease
Also called Non-specific EOEE · Undetermined EOEE · Undetermined early-onset epileptic encephalopathy
What it is
A rare infantile epilepsy syndrome characterized by early onset of seizures of variable type and severity, potentially associated with a spectrum of clinical signs and symptoms including delay or lack of psychomotor development, intellectual disability, poor or absent speech development, behavioral abnormalities, hypotonia, movement disorders, spasticity, microcephaly, and dysmorphic facial features, among others. Brain imaging findings are also variable and may include cerebral atrophy or white matter abnormalities.
Key facts
- Age of onset
- Infancy, Neonatal
- Inheritance
- Autosomal dominant, Autosomal recessive, Not applicable, X-linked recessive
- Classified as
- Disease
Signs and symptoms
Common30–79%
10Sometimes5–29%
31- Abnormal corpus callosum morphology
- Abnormal myelination
- Ataxia
- Attention deficit hyperactivity disorder
- Atypical behavior
- Autism
- Brain atrophy
- Cerebral atrophy
and 23 more in this range
These 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.
Genes
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.
Benefit programs to look at
Programs whose eligibility touches the same ICD-10 categories. Eligibility is decided by the administering agency, never by this page.
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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