MSFinals-3162

A 4-year-old boy is brought to the paediatric assessment unit, after his parents witnessed him having a seizure. He has no history of seizures. The seizure lasted 30 seconds, and his parents described both his arms and legs shaking. There was no incontinence or tongue biting. For the last week he has had a flu-like illness, and the parents have recorded temperatures of 39.1°C (normal 36.1–37.2°C). You suspect a diagnosis of febrile seizures.
What advice should you give the parents about the risk of future seizures?