Self-limited neonatal/infantile epilepsy

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Self-limited neonatal/infantile epilepsy

ORPHA:140927Disease

Also called BFNIS · Benign familial neonatal-infantile seizures · Benign neonatal-infantile epilepsy · SeLFNIE

What it is

A rare neonatal/infantile-onset epilepsy syndrome characterized by brief focal seizures between the first days and six months of life in otherwise healthy infants. Seizures often occur in clusters and may include motor symptoms and autonomic signs (including apnea and cyanosis). Occasionally generalized seizures are present. Typically, seizures resolve spontaneously without causing any long-term neurological effects.

Key facts

Prevalence
<1 / 1 000 000
Age of onset
Infancy, Neonatal
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

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

KCNQ2Disease-causing germline mutation(s)
SCN2ADisease-causing germline mutation(s)

ICD-10 codes

G40.4filed under a broader ICD-10 category — shared with 28 other rare diseases

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

GARD 1518MONDO 0011904MONDO 11904OMIM 607745UMLS C5671283

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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