If a child in this age group experiences a fit or seizure, always seek medical help. Fits can be due to a serious illness and any child having a first fit must be reviewed as soon as possible by a doctor. If you think your child is having a fit, phone 911 and ask for an ambulance. Some young children will have a fit with a high temperature (febrile fit/seizure). Fits with a high temperature are not usually due to a serious underlying illness. Any child having a febrile fit should be reviewed by a doctor as soon as possible, however, most febrile fits occur with mild viral infections .