Skip to Content

Symptom Checker

Step 4: Read and complete the decision guide to learn more about your symptoms.

Fever in Infants

Call your doctor immediately.

While most fevers in infants are not caused by serious infections, doctors are more cautious with very young infants; their defenses are not as strong as older infants.

All babies less than three months of age with fevers of 100.4 F (38 C) should be seen as close to immediately as possible, and many will need tests of the blood, urine, and spinal fluid.

Feedback beta label

Please provide feedback to help us improve the Symptom Checker.

Disclaimer: This content should not be considered complete and should not be used in place of a call or visit to a health professional. Use of this content is subject to specific Terms of Use & Medical Disclaimers.