Febrile Seizures:Overview of Knowledge
Febrile seizure (FS) is a convulsive event, exclusively occurring in childhood. The Inte rnational League Against Epilepsy (ILAE) defined FS as a seizure in association with a febrile illness in the absence of a central nervous system (CNS) infection or acute electr olyte imbalance in children older than 1 month of age without prior afebrile seizures. Febrile seizure (FS) the most common type of seizure. The condition is more common in children belonging to a lower socioeconomic status, and occur in 2 to 4 percent of all children
Febrile seizures are the most common convulsive disorder in children under 5 years old. Among these children, some develop recurrent febrile seizures. The syndrome of febrile seizures is defined as seizures associated with fever in the absence of central nervous system infection or acute electrolyte imbalance in a young child. Febrile seizures occur in approximately 2% to 4% of young children in the United States, South America, and Western Europe. The high frequency reported in Japan 9% to 10% of children. It is the most benign type of all seizures occurring in childhood. Causation is thought to be multifactorial, combination of genetic and environmental factors. Generally accepted risk factors include Viral infections commonly cause of febrile convulsions, age of onset before 18 months, temperature close to 38°C, shorter duration of fever (less than 1 hour) before the seizure and family history of febrile seizures . The most consistent risk factors reported are a family history in recurrence of febrile seizures.