A fever is a temporary increase in body temperature, and a sign that you're fighting an illness or infection. The average normal temperature for a health person is 98.6 F (37 C). When it rises above that, especially in infants and toddlers, it can be serious.

More health and medical news on the Mayo Clinic News Network. https://newsnetwork.mayoclinic.org/

Journalists: Clean and nat sound versions of this pkg available for download at https://newsnetwork.mayoclinic.org/

Register (free) at https://newsnetwork.mayoclinic.org/request-account/