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[Evaluation of a child with a first unprovoked seizure].

Paroxysmal episodes are one of the most common neurological disorders in children. It is important to distinguish between paroxysmal non-epileptic events, symptomatic seizures, febrile seizures, and unprovoked seizures. Patient's history is the key to proper diagnosis in most of the cases. A single unprovoked seizure is a frequent phenomenon in the pediatric population. Studies of recurrence after a first unprovoked seizure show percentages between 23% and 96% over a median follow-up of two years. The aim of this study is to define how to evaluate the first unprovoked epileptic seizure in a child and to review the weight of the different recurrence risk factors. Several factors enable us to predict the recurrence risk after a first unprovoked seizure including family history of epilepsy, prior history of febrile seizures, age at onset, type of seizure, prolonged seizures at onset, multiple seizures in a single day, sleep state, neurological abnormalities, etiology, and abnormalities in the electroencephalogram. The most important of these risk factors are the etiology of the seizures and the evidence of epileptiform abnormalities in the electroencephalogram.