[header] How to reduce fever in a toddler [title] Assess your toddler's fever. [step] Take your toddler's temperature using a digital thermometer. You get the most accurate reading by taking it rectally, but you can also take it under the armpit (however this is the least accurate measure). 
Never mix-and-match using the same thermometer. [substeps] You can also take a toddler's temperature on the forehead with a temporal artery scanner and with an in-ear thermometer.