Q: My 15-day-old newborn has severe nasal congestion and yellow mucus. Does my baby need to see a doctor?

Medically reviewed by Sang Hyun Ahn, MD

Content edited by Myeongchan Kim, MD

This post is a dramatization of a question and answer session experienced by our actual medical reviewers. Please note that this content is for informational purposes only and does not constitute medical advice. Always consult with a qualified healthcare professional for any health concerns or before making any decisions related to your health or treatment.

Question:

Hello, my baby is 15 days old. They have had a stuffy nose since we were at the newborn care center, but the mucus wasn't yellow back then. Since we came home last Friday, the congestion has continued. On Sunday, I used some baby saline drops, and a lot of yellow mucus came out. The congestion remained severe, so I cleared their nose again today. The mucus is still yellow, although the amount has decreased a bit. I've heard that yellow mucus indicates a cold. Do I definitely need to take my baby to see a doctor?

Answer:

Hello. You must be very worried about your 15-day-old baby experiencing persistent nasal congestion and yellow mucus.

Yellow mucus in a newborn requires careful attention. Because your baby is only 15 days old, we need to be particularly cautious with these symptoms.

Current Situation Assessment:

• Nasal congestion has persisted since being at the newborn care center.

• Yellow mucus started recently.

• The volume of mucus is slightly decreasing after using saline.

Why a newborn needs immediate medical attention:

• For infants under 28 days old (neonates), all symptoms must be taken very seriously and evaluated by a professional.

• Yellow mucus suggests the possibility of a bacterial infection.

• Newborns primarily breathe through their noses, meaning severe nasal congestion can directly interfere with both their breathing and feeding.

Guidance for your hospital visit:

• Check and record your baby's body temperature. If it is 37.5°C (99.5°F) or higher, go to the emergency room immediately.

• Keep a record of your baby's feeding amounts and the number of wet diapers to show the doctor.

• If your baby is breathing rapidly, flaring their nostrils, or appears to be struggling to breathe, seek emergency medical help right away.

If there are no immediate signs of breathing difficulties or fever, please take your baby to see a pediatrician today for an accurate assessment. When it comes to newborns, it is always much safer to say "let's get it checked by a doctor" rather than assuming "it will probably be fine."

For extra peace of mind and clear guidance when tracking your child's symptoms, the FeverCoach app is always there to help.

https://fevercoach.us