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Start free with EleplanSelf-limited infantile epilepsy
ORPHA:306Disease
Also called BFIE · BFIS · Benign familial infantile convulsions · Benign familial infantile epilepsy · Benign familial infantile seizures · SeLIE
What it is
A rare genetic epilepsy syndrome characterized by repeated brief focal seizures occurring between 3 and 20 months of age, typically peaking around 6 months.
Key facts
- Prevalence
- 1-5 / 10 000 (at birth, United Kingdom)
- Age of onset
- Infancy
- Inheritance
- Autosomal dominant
- Classified as
- Disease
Prevalence figures describe populations, not individuals, and are often estimates from a single study. Where the figure is an incidence or a birth prevalence, it says so.
Signs and symptoms
Common30–79%
17- Apnea
- Athetosis
- Bilateral tonic-clonic seizure with focal onset
- Chorea
- Choreoathetosis
- Dystonia
- Focal clonic seizure
- Focal impaired awareness autonomic seizure
- Focal impaired awareness seizure
- Focal motor seizure
- Focal-onset seizure
- Focal tonic seizure
- Generalized clonic seizure
- Generalized tonic seizure
- Involuntary movements
- Paroxysmal dyskinesia
- Seizure
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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