Febrile convulsions - Risks
Your child is more likely to have a second febrile seizure if their first one was when they were below the age of 15 months. Frequent fevers also predispose your child to febrile seizures. Having an immediate member of the family with a history of febrile convulsions puts your child at greater risk of having one too. If the seizure occurs soon after a fever has begun or when the temperature is relatively low, the risk of recurrence is higher. However, having a long initial febrile seizure does not substantially boost the risk of recurrent febrile seizures, either brief or long.
Attribution: Avallain