Febrile convulsions (formerly known as febrile convulsions) are a common condition in childhood. Age of onset: 3 months to 5 years, with a peak at 18 months and rare after 6 years. Body temperature: often above 38.5 degrees Celsius Occurs at the beginning of upper respiratory tract infections or acute infectious diseases (mostly at the beginning of the disease when the body temperature rises suddenly, 70% are induced by upper sensation), mostly within 24 hours after the onset of fever Excluding intracranial infections and other organic or metabolic abnormalities that cause convulsions No previous history of febrile convulsions (epilepsy, etc.) Prevalence: 5 to 6% of all children 30% of all types of pediatric convulsions, 28% of pediatric convulsions Classification and basic clinical features of pediatric febrile convulsions: simple pediatric febrile convulsions, complex pediatric febrile convulsions Incidence: 80% of pediatric febrile convulsions, 20% of pediatric febrile convulsions Age of onset: mostly between 6 months and 3 years; disappears after 6 years Temperature: mostly at the beginning of the illness when the body temperature rises, may be hypothermic or feverless Form of seizures: generalized or limited or asymmetric seizures Number of seizures: only one convulsive seizure during a febrile episode, rarely two; or repeated several times Duration: seizures are brief, mostly about 5 minutes. No abnormal neurological signs are left after waking. Long duration of seizures. Abnormal neurological signs remain. Prognosis: good. The prognosis of severe convulsions depends more on the intrinsic etiology of the child and less on the convulsive seizure itself. As for early febrile convulsions, they are gradually recognized during follow-up as other diseases or as epilepsy such as generalized epilepsy with additional febrile convulsions, severe myoclonic epilepsy in infants, temporal lobe epilepsy (hippocampal sclerosis), etc. It is still mainly due to genetic inheritance and pre-existing abnormalities during the development of the affected child. Most studies have shown that febrile seizures themselves generally cause less brain damage (except for persistent states). After decades of research, medical practitioners can basically affirm that the majority of febrile convulsions manifest as a benign self-limiting disease. However, if complex febrile convulsions occur in children or if there are high-risk factors or frequent febrile convulsions in children, it is necessary to see a pediatric neurologist for the necessary examination, follow-up and preventive treatment.