Fever medicine lowers the temperature a degree or two - it does not switch it off, and the NHS notes a child's fever usually lasts 3 to 4 days: the return after each dose is the illness, not a failing medicine.
Watch the child, not the number: drinking, responding, normal color matter more than 38 versus 39. The override flags: any fever of 38C or more under 3 months old (always urgent), a rash that does not fade under a pressed glass, breathing difficulty, floppy unresponsiveness, a seizure, dehydration signs, or fever past 4 or 5 days.
What to do
Common questions
Why is my toddler's fever not coming down?
First, reset the expectation: fever medicine is a comfort tool, not an off switch - acetaminophen or ibuprofen typically drops the temperature a degree or two for a few hours, and the fever returning when the dose wears off is the illness doing its normal course, not the medicine failing. The NHS notes a child's fever usually returns to normal within 3 to 4 days - a viral fever that runs several days with the child drinking, playing in flashes, and perking up after medicine is the common, benign pattern. What matters is the child, not the number: a toddler at 39C who drinks, responds, and has normal color worries doctors less than one at 38C who is listless, refusing fluids, or breathing hard. The red flags that override the wait-and-see: under 3 months with any fever of 38C or more (urgent assessment, always); a fever with a rash that does not fade under a pressed glass; breathing difficulty, floppy unresponsiveness, a seizure, or signs of dehydration; and a fever genuinely lasting past 4 or 5 days or climbing despite good care - that earns an exam to hunt an ear infection, urine infection, or pneumonia. Pymander, a free AI doctor available 24/7 by text, can help you triage tonight.