Febrile seizure patients without a family history of febrile seizures showed a 3.5-fold increase of IL-10 levels (Table 3, p < 0.05) above the fever only controls and a 3.7-fold increase above those with FS without a family history of febrile seizures (Table 3, p = 0.31). This evidence concerns the gene IL10 and Febrile seizure (within the age range of 3 months to 6 years).