Menu Healthy Lifestyle Diseases & Conditions First Aid Symptoms Tests & Procedures Videos Definitions FAQs Febrile seizureUpdated: 2017-06-13OverviewA febrile seizure most commonly occurs on the first day of a fever. It may last a few minutes and is usually harmless. SymptomsSymptoms may include staring, severe shaking, or tightening of the muscles. A child may lose consciousness. TreatmentsMedical attention is needed as soon as possible if it's a child's first such seizure. Emergency medical care is needed for repeated seizures or those lasting over 10 minutes. © 1998-2022 Mayo Foundation for Medical Education and Research(MFMER). All rights reserved. Terms of Use