Final answer:
Most children who experience febrile seizures have a body temperature above 38°C (100.4°F). These seizures are generally triggered by a rapid increase in temperature during the onset of a fever in young children between 6 months and 5 years old.
Step-by-step explanation:
With febrile seizures, most children experience a rapid increase in body temperature, often to above 38°C (100.4°F). Febrile seizures are convulsions that can happen when a child has a fever, typically during the first day of a fever. Children between the ages of 6 months and 5 years are the most commonly affected. Generally, the higher the fever, the more likely it is to potentially trigger a seizure. While they can be frightening to witness, febrile seizures are usually short and do not typically cause long-term health issues or brain damage.