Thanks for enquiring at HealthCareMagic. It is possible for anyone to have a fit, but some people are more likely than others to have one. The brains of some infants and young children are very sensitive to rises in body temperature they may have a convulsion when they have a fever. The fit usually occurs while the child s temperature is rising rapidly at the beginning of an illness and most often occurs on the first day of the illness. Please note that about 1 in 25 children will have a febrile convulsion. Febrile convulsions occur between the ages of 6 months and 5 years and are less common after the age of 5 years there is an increased chance of your child having a febrile convulsion if a close relative had febrile convulsions as a child. The tendency to febrile convulsions runs in families. Children who are developmentally delayed or who have spent more than 28 days in a neonatal intensive care unit are also more likely to have a febrile seizure. Moreover, one of 4 children who have a febrile seizure will have another, usually within a year. So you can see that some children have increased risk but it is difficult to comment on the exact predilection. I hope that helps. Feel free to revert back with further queries if any.