A temperature hovering at 102 in a child might be alarming, but Dr. Auth says it’s common for children younger than 5 to spike high temperatures when ill. In these cases, caregivers ought to work to make the child more comfortable by employing a fever reducer like acetaminophen, which is gentle on the stomach and safe for children of all ages. When temperatures creep to 104 degrees, a parent should make an appointment with a pediatrician, Dr. Auth says. If a child has a 105-degree fever that doesn’t decrease abruptly with acetaminophen, go to urgent care, he says.