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Syndrome reference sheet
Generated 12 Oct 2026
Pediatrics · Pediatrics / Pediatric neurology

Dravet syndrome

Also known as: Severe myoclonic epilepsy of infancy

Epileptic encephalopathy with febrile seizure onset.

Medical specialty
Pediatrics
Subspecialty
Pediatrics / Pediatric neurology
Sex & age distribution
Male: affected; Female: affected, equal; Children: yes, onset in first year
Gene(s) involved
GABRG2, PCDH19, SCN1A, SCN1B

Etiology & mechanism

SCN1A loss of function.

Gene(s) involved (4)

GABRG2PCDH19SCN1ASCN1B

Symptoms & signs (5)

ataxiadevelopmental regressionmyoclonusprolonged febrile seizuressudden unexpected death in epilepsy
SyndromeScope — educational reference. Content is model-generated and not clinically verified; always confirm against OMIM, Orphanet and GeneReviews before clinical use.