Seizures, Febrile

**Definition:** Seizures that occur during a febrile episode. It is a common condition, affecting 2-5% of children aged 3 months to five years. An autosomal dominant pattern of inheritance has been identified in some families. The majority are simple febrile seizures (generally defined as generalized onset, single seizures with a duration of less than 30 minutes). Complex febrile seizures are characterized by focal onset, duration greater than 30 minutes, and/or more than one seizure in a 24 hour period. The likelihood of developing epilepsy (i.e., a nonfebrile seizure disorder) following simple febrile seizures is low. Complex febrile seizures are associated with a moderately increased incidence of epilepsy. (From Menkes, Textbook of Child Neurology, 5th ed, p784)

**Tree numbers:** - C10.597.742.571 - C23.888.592.742.571

**Synonyms:** - Febrile Seizures - Pyrexial Seizure - Febrile Convulsion Seizure - Febrile Fit - Fever Convulsion - Fever Seizure - Convulsions, Febrile - Pyrexial Convulsion