Tests and diagnosis

By Mayo Clinic Staff

Identifying the cause of your child's fever is the first step after a febrile seizure. 

Simple febrile seizures

To determine the cause of infection, your doctor may recommend:

  • A blood test
  • A urine test
  • A spinal tap (lumbar puncture), to find out if your child has a central nervous system infection, such as meningitis

Complex febrile seizures

For complex febrile seizures, your doctor also may recommend an electroencephalogram (EEG), a test that measures brain activity.

If the seizure involved just one side of the child's body, your doctor may also recommend an MRI to check your child's brain.

June 03, 2017