Table 1.

Differences between simple (typical), complex (atypical), and prolonged febrile seizures.

	FS simple	FS complex	Prolonged
Onset	During the rising phase of highly febrile episodes	Low or moderate level of febrile episodes	Continuous/intermittent febrile seizures without consciousness being regained at the interictal state for more than 30 mins
Duration	Few minutes	More prolonged (10 mins)
Phenotype	Generalized tonic-clonic	Hemilateral or focal
Recurrence during the same fever episode	No recurrence	Possible recurrence
Others FS	Frequent	More frequent
Post-ictal events	No	May be residual Tod's paralysis
Prior neurologic signs	Absent	May be present
Prognosis	Good as the general population	Afebrile seizures in 10–15% of cases