Causes of febrile seizures

The cause of febrile seizures is unknown, although they're linked to the start of a fever, a high temperature of 38C (100.4F) or above. There may also be a genetic link to febrile seizuresthe chances of having a seizure are increased if a close family member has a history of them. In most cases,the high temperature is caused by an infection. Common examples are chickenpox , flu ,a middle ear infection or tonsillitis . In rare cases, febrile seizures can occur after a child has a vaccination. Research has shown children have a 1 in 3,000 to 4,000 chance of having a febrile seizure after having the MMR vaccine . The risks are even lower with the DTaP/IPV/Hib vaccine a1 in 11,000 to 16,000 chance.
Content supplied by the NHS Website

Medically Reviewed by a doctor on