Synonyms: West syndrome
A rare epilepsy syndrome characterized by onset of epileptic spasms in infants between 2 and 12 months of age and rarely up to 24 months. Infants may have no antecedent history or a history reflecting the underlying cause. The classical triad of epileptic spasms hypsarrhythmia and developmental stagnation or regression is historically referred to as West syndrome.
Data from Orphanet are used to provide information on a disease's name, synonym(s), and overview. Reference: Access aggregated data from Orphanet at Orphadata. Orphadata: Free access data from Orphanet. © INSERM 1999. Available on http://www.orphadata.org. Data version April 2026
Newly diagnosed with
Infantile spasms syndrome?
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Advocacy Organizations
FamilieSCN2A Foundation
Our MISSION is to accelerate research, build community and advocate to improve the lives of those affected by SCN2A-related disorders around the world.
Genetic Epilepsy Team Australia
Collaboration of research and care
MAST Genes Research Foundation
Connecting families and fueling research into microtubule-associated serine/threonine kinase (MAST) genetic mutations to improve the quality of life and develop therapies to support affected patients and families.
Mickie?s Miracles
To help families get into Level IV Pediatric Epilepsy Centers for diagnosis and treatment urgently -- and provide support to families for every season of the pediatric epilepsy journey.
Rare Epilepsy Network (REN)
Improving outcomes of people with rare epilepsies through an innovative collaborative infrastructure that drives urgent, patient-centered research, educaiton and advocacy.
SCN2A Asia Pacfic
To improve outcomes for families impacted by SCN2A through research and outreach programs
SCN2A Georgian Association
Spread awareness and to help families impacted by scn2a
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Clinical Trials
For a list of clinical trials in this disease area, please click here.