Diagnosis

If your baby is younger than 3 months of age, call his or her doctor early in the illness. In newborns, it's especially important to make sure that a more serious illness isn't present, especially if your baby has a fever.

In general, you don't need to see the doctor if your older baby has a common cold. If you have questions or if your baby's symptoms worsen or don't go away, it might be time to see the doctor.

Your baby's doctor can generally diagnose a common cold by your baby's signs and symptoms. If your doctor suspects your baby has a bacterial infection or other condition, he or she may order a chest X-ray or other tests to exclude other causes of your baby's symptoms.