Most doctors agree that a normal body temperature for a healthy baby is between 97 and 100.4 degrees Fahrenheit (36 to 38 degrees Celsius). If your baby’s rectal temperature is above this range, he has a fever.
• If your baby is less than 3 months old and has a temperature of 100.4 degrees F (38 degrees C) or higher, call the doctor immediately. A baby this young needs to be checked for serious infection or disease.
• For a baby between 3 and 6 months old, call if his temperature reaches 101 degrees F (38.3 degrees C) or higher.
• If your baby is 6 months or older, call your doctor if his fever reaches 103 degrees F (39.4 degrees C) or higher.
Fever is your body’s way of fighting against bacteria and viruses. Bacteria and viruses prefer a lower temperature- around 98.6 F, 37 degrees C. A fever also tells the body to make more white blood cells and antibodies to fight the infection.
Your baby’s temperature could go up if he is overdressed or covered with too many baby blankets when he’s sleeping. If your baby’s temperature is high because he is overdressed, remove some of the clothing and offer milk or formula to prevent dehydration.
If your baby has a high fever and no other symptoms such as vomiting or diarrhea, do not give him aspirin or other medication. Call your doctor.
