A febrile seizure is a
Seizure - fever induced
Causes, incidence, and risk factors
About 3 - 5% of otherwise healthy children between ages 9 months and 5 years will have a seizure caused by a fever. Toddlers are most commonly affected. Febrile seizures often run in families.
Most febrile seizures occur in the first 24 hours of an illness, and not necessarily when the fever is highest. The seizure is often the first sign of a fever or illness
Febrile seizures are usually triggered by fevers from:
Roseolainfantum (a condition with fever and rash caused by several different viruses)
- Upper respiratory infections caused by a virus
A child is likely to have more than one febrile seizure if:
- There is a family history of febrile seizures
- The first seizure happened before age 12 months
- The seizure occurred with a fever below 102 degrees Fahrenheit
Review Date: 02/11/2010
Reviewed By: David C. Dugdale, III, MD, Professor of Medicine, Division of General Medicine, Department of Medicine, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.