Who doesn't remember mom gently kissing your
forehead or putting her hand on your cheek to
check if you felt feverish? While you often can
tell if your child is warmer than usual by feeling
his or her forehead, only a thermometer can
tell you what the temperature actually is.

Thermometer Options

Today, parents can choose from a number of different types of thermometers, including digital, glass, ear,
temporal artery or temperature strips. It's important to remember that mercury thermometers should not be
used. In fact, leading experts encourage parents to remove mercury thermometers from their homes to
prevent accidental exposure to this toxin.

There are newer glass thermometers that contain alternative mercury-free liquids such as alcohol or galinstan.
However, they tend to be harder to find in stores than digital thermometers and still have a risk of breaking.
Experts tend to favor the use of digital thermometers over glass models.


Choosing the Right Option for You and Your Child

Type of Thermometer Pros Cons
Digital
  • Quick, accurate and easy to
    read
  • Can be used in the rectum,
    mouth or under the armpit
  • Concern about causing discomfort
    if used rectally
  • Must wait at least 15 minutes if your
    child has been eating or drinking
    when using orally
  • Need separate thermometers
    for rectal and oral use
  • Taking a child's temperature under
    the arm is generally not as accurate
    as taking it rectally or orally
Glass
  • Accurate, do not rely on
    batteries, inexpensive
  • Newer mercury-free alcohol
    or galinstan options now
    available
  • Can be used in the rectum,
    mouth or under the armpit
Newer glass thermometers are
associated with the same cons
as digital thermometers. In addition,
glass thermometers:
  • Need to be held in place for three
    or more minutes in order to get a
    correct reading
  • Are often harder to find in
    stores
  • Still have a risk of breaking,
    especially with infants/children
    who may move suddenly
Ear
  • Quick, accurate when used
    appropriately
  • Appropriate for children ages
    three months and older
  • Not recommended for newborns
  • Earwax or a small, curved ear
    canal can interfere with accuracy
Temporal Artery
  • Can record a temperature in
    about six seconds
  • Appropriate for children ages
    three months and older
  • Not recommended for newborns
  • Experts continue to assess their
    accuracy compared with other
    options
  • May be more expensive than
    other types of thermometers
Temperature Strips
  • Appropriate for children ages
    three months and older
  • Provides a level of convenience
  • Not recommended for newborns
  • Are not always precise
  • Can be affected by a person's
    surroundings
The contents of the Fever Facts site are for informational purposes only and not intended to be a substitute for professional medical advice, diagnosis, or treatment.