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DOI: 10.1177/000992289403300502 First Febrile SeizuresCharacteristics of the Child, the Seizure, and the IllnessDepartment of Neurological Surgery, University of Washington School of Medicine, Department of Pediatrics, University of Washington School of Medicine
Department of Pediatrics, University of Washington School of Medicine
Department of Pediatrics, University of Washington School of Medicine, Departments of Psychiatry and Behavioral Sciences, Children's Hospital and Medical Center, University of Washington School of Medicine, Seattle, Washington
Through interviews with parents, data were gathered about 910 first febrile seizures in children aged 8 to 34 months. A male preponderance of 57% was found (P <.001). In 29% of cases, there was a family history of febrile seizures. Eighteen percent of seizures were focal, and 7% lasted 15 minutes or more. Focal seizures were much more likely to be of long duration (P <.001). Otitis media was diagnosed in 32% of cases, and tonsillitis or upper respiratory infection in 12%. When compared to febrile seizures after the first birthday, febrile seizures in children aged 8 to 11 months were more than twice as likely to be longer than 15 minutes (P= .015). They were also much more likely to be followed by further seizures in the same illness (P <.001). Thus, febrile seizures in children younger than 1 year are more likely to have the characteristics known to increase the risk of later nonfebrile seizures.
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