Some babies have convulsions when they have a fever, mainly showing tonic or rhythmic jerking of the limbs, which can be accompanied by a blue face and can be accompanied by loss of consciousness. There are many causes of fever convulsions in babies. Febrile convulsions: convulsions occur when a child has a high fever, and the baby’s mental state is as normal after the convulsions are relieved, usually occurring within the first 24 hours of the fever, and the seizures can generally be relieved on their own for a few minutes, and some have a clear family history, mainly because the functional development of the brain nerves is not yet perfect, so it is said that the symptoms of convulsions occur with the rise in body temperature. Central nervous system infection: It also shows fever with convulsions, and some of them are accompanied by poor state of consciousness, frequent vomiting and other manifestations of increased intracranial pressure, which need to be confirmed by cerebrospinal fluid examination. First seizure, epilepsy is a common neurological disorder, generally fever is more likely to induce seizures, for children with epilepsy often have convulsions during fever. Other neurological disorders, such as immune encephalitis, are relatively uncommon. In general children with fever must understand the cause of fever convulsions and give the appropriate treatment after identifying the cause is the best solution.