Table 3.

History of prior febrile seizures and electroclinical syndrome identified at diagnosis of epilepsy

Syndromen (of 524)With febrile seizures, n (%)
* Does not include multifocal or symptomatic by virtue of etiology only.
† Numbering system of the International League Against Epilepsy (ILAE) classification of the epilepsies16 is used.
GTC = generalized tonic-clonic seizures; EIEE = early infantile epileptic encephalopathy.
1. Localization related32245 (14.0)
1.1 Idiopathic616 (9.8)
1.1.1 Benign rolandic596 (10.2)
1.1.2 Benign occipital20 (0)
1.2 Symptomatic17524 (13.7)
1.2.2 Characterized by modes of precipitation10 (0)
1.2.3 Based on localization or etiology17424 (13.8)
Temporal7910 (12.7)
Extratemporal*669 (13.6)
1.3 Cryptogenic8615 (17.4)
2. Generalized14013 (9.3)
2.1 Primary generalized12210 (8.2)
2.1.0 Not further classified10 (0)
2.1.4 Childhood absence743 (4.1)
2.1.5 Juvenile absence141 (7.1)
2.1.6 Juvenile myoclonic epilepsy121 (8.3)
2.1.7 w/GTC on awakening20 (0)
2.1.8 Other not defined above164 (25.0)
2.1.9 Elicited by specific modes of precipitation31 (33.3)
2.2 Symptomatic/cryptogenic153 (20.0)
2.2.0 Not further specified20 (0)
2.2.1 Infantile spasms10 (0)
2.2.2 Lennox–Gastaut syndrome30 (0)
2.2.3 Doose syndrome72 (28.6)
2.2.4 With myoclonic absences21 (50.0)
2.3 Symptomatic30 (0)
2.3.1 Early myoclonic encephalopathy00 (0)
(nonspecific etiology)
2.3.2 EIEE (specific etiology)30 (0)
3. Undetermined focal or generalized6215 (24.2)
3.1 With both focal and generalized features31 (33.3)
3.2 Without unequivocal generalized or focal features5914 (23.7)