Recurrence occurs in 1/3 of children diagnosed with febrile convulsions, with more than half of the recurrences occurring within 1 year of the first episode and 90% within 2 years. Risk factors for recurrence are: 1. History of febrile convulsions in first-degree relatives. 2. 2, the first febrile convulsions fever is low. 3, the first febrile convulsions in the same heat course more than 2 episodes.