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Living with Benign neonatal seizures

An inherited condition with repeated seizures in newborns that usually go away within months.

Understanding Benign neonatal seizures

Benign neonatal seizures, also called benign familial neonatal seizures (BFNS), is an inherited condition with repeated seizures in newborn babies.

Seizures begin around day 3 of life and usually go away within 1 to 4 months. They may involve one side of the brain or both. Most babies develop normally, though some develop intellectual disability or a rippling muscle movement called myokymia. About 15 percent of people have seizures again later in life.

Signs & symptoms

Symptoms vary from person to person. GARD lists these among the most common:

  • Seizures in newborns
  • Muscle stiffness (tonic seizure)
  • Muscle jerking (clonic seizure)
  • Pauses in breathing (apnea)
  • Bluish color around the mouth
  • Seizures on one side of the brain

Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.

Diagnosis

  1. Talk with your doctor

    Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.

  2. See a specialist

    Specialists who may be involved include brain and nervous system specialists, genetic specialists and seizure and epilepsy specialists.

  3. Ask which tests can help

    Your care team will decide which exams and tests can confirm the diagnosis.

  4. Connect with expert centers

    Epilepsy Foundation may keep lists of experts for this condition.

Care & treatment

Care team
Brain and nervous system specialists (neurologists); Genetic specialists (geneticists); Seizure and epilepsy specialists (epileptologist)
Expert care
Expert lists: Epilepsy Foundation
Treatment
GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
Research
Clinical trials and observational studies may be options. See the research section below.

General information, not medical advice. Your care team makes the decisions.

Everyday life

Living with a rare condition is easier with support.

  • Connect with KCNQ2 Cure Alliance and other patient organizations
  • Keep notes on symptoms, changes and questions for appointments
  • Ask about patient registries that help research
  • Look into financial aid and travel resources for care visits
Bring these questions to your next doctor visit
Can genetic testing confirm the cause of my baby's seizures?
What should we do if our baby has another seizure?
What follow-up is needed in case seizures return later in life?

Quick facts

Symptoms usually startNewborn
InheritanceAutosomal Dominant

Changes in genes cause this condition. It is autosomal dominant, so one changed copy of the gene is enough.

GeneticNeurological

Also known as: autosomal dominant form of benign neonatal seizures; benign familal neonatal seizures; benign familial convulsion; benign familial convulsions; benign familial neonatal convulsions; benign familial neonatal epilepsy

Patient organizations

Source: NIH GARD · Benign neonatal seizuresGARD ID 1519 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

You are more than your diagnosis

Perspectives from people navigating life with Benign neonatal seizures.

Explore the Benign neonatal seizures blog

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