What Is Considered a Fever in an Infant?

A fever is usually a sign that the body is working to fight an infection. Though a fever is a common part of being an infant, it can sometimes be dangerous, so it's important to know when to call the doctor about your child's temperature.

• Always take your baby's temperature if you suspect a fever.

Temperature of a Fever

• The American Academy of Pediatrics considers a rectal temperature of 97 to 100.4 degrees to be normal for an infant; anything higher means your baby has a fever.

Fever in Young Babies

• A fever is especially dangerous for babies younger than 4 months, who may develop serious infections that their bodies cannot fight properly, Dr. Spock states. Call your baby's doctor if her fever is 100.4 or higher at this age.

When to Call the Doctor

• The doctor should be notified if your 4- to 6-month-old has a fever over 101 degrees or your infant over 6 months has a temperature of 103 degrees, BabyCenter recommends.

The Importance of a Thermometer

• While feverish babies usually feel warm to the touch, always take their temperature to be sure; young babies can't control their body temperature very well and may become warm after being bundled in layers of clothing or after skin-to-skin contact.

Considerations

• Remember that a fever is not the only indicator that your baby is not well; loss of appetite, irritability, drowsiness and other behavioral changes may be signs of illness, so don't hesitate to call your doctor if you're concerned.