Fever seizures

Fever seizures (febrile seizures) are uncontrolled muscle spasms and unresponsiveness in a child. They usually last 1 to 3 minutes and are seldom serious.

Fever seizures are not a form of epilepsy. A seizure is likely to be fever-related if:

  • There is one seizure in a 24-hour period.
  • The seizure lasted less than 15 minutes.
  • The seizure affected the entire body, not just one side of the body.
  • The child is age 6 months to 5 years old.
  • The child does not have nervous system (neurological) problems.
  • The child has had fever seizures before.

Symptom Checker

Feeling under the weather?

Use our interactive symptom checker to evaluate your symptoms and determine appropriate action or treatment.

Interactive Tools

Get started learning more about your health!

Our Interactive Tools can help you make smart decisions for a healthier life. You'll find personal calculators and tools for health and fitness, lifestyle checkups, and pregnancy.