When your baby or infant has a feverFever - infant; Fever - baby
The first fever a baby or infant has is often scary for parents. Most fevers are harmless and are caused by mild infections. Overdressing a child may even cause a rise in temperature.
Regardless, you should report any fever in a newborn that is higher than 100.4°F (38°C) (taken rectally) to the child's health care provider.
Mick NW. Pediatric fever. In: Walls RM, Hockberger RS, Gausche-Hill M, eds. Rosen's Emergency Medicine: Concepts and Clinical Practice. 9th ed. Philadelphia, PA: Elsevier; 2018:chap 166.
Nield LS, Kamat D. Fever. In: Kliegman RM, Stanton BF, St Geme JW, Schor NF, eds. Nelson Textbook of Pediatrics. 20th ed. Philadelphia, PA: Elsevier; 2016:chap 176.