Febrile convulsions, also known as febrile convulsions, are likely to be caused by familial genetic factors, as well as neurodevelopmental immaturity and upper respiratory tract infections. 1. Family genetic factors: If there is a family genetic predisposition, such as both parents or one parent has a history of febrile convulsions, it is likely to lead to a significantly higher incidence of children. 2. Environmental factors: infants and young children with febrile convulsions may also be related to environmental factors, especially when subjected to bacterial or viral infections in the environment will induce febrile convulsions. 3. Vaccination: after vaccination, some people may experience immune rejection, which may also produce febrile convulsions. Certain vaccines are more likely to cause febrile convulsions, especially live attenuated vaccines (e.g., MMR) and whole-cell prepared vaccines (e.g., whole-cell pertussis vaccine). Prompt medical attention is needed when febrile convulsions occur to prevent further progression of the disease.