Where is the best place to put the thermometer?
A rectal (in the bottom) temperature is the most accurate. Temperatures measured by mouth, by electronic pacifier, or by ear are also accurate if done properly. Temperatures measured in the armpit are the least accurate, but they are better than no measurement. The best place to use the thermometer depends on the age of your child. For a baby less than 3 months old (90 days old): An armpit temperature is best because it is safest and works fine for a quick check. If the armpit temperature is over 99F (or 37.2C), double check it with a rectal temperature. It is good to double check with a rectal temperature because if your baby has a true fever, you should see a healthcare provider immediately. For a child between 3 months and 4 or 5 years old: A rectal temperature or electronic pacifier thermometer are best. Using a temporal artery or ear thermometer is fine after 6 months old. An armpit temperature is fine for a quick check if done correctly. For a child older than 4 or 5 years old: T
