Some babies are always congested and parents often wonder why. There can be a number of reasons for a baby’s congestion, from environmental factors to developmental issues. If the baby is formula-fed, dairy could be the culprit. If is breastfed, she might be allergic to something in her mom’s diet. It could also be due to a cold or sinus infection. In some cases, the baby may have a structural problem with the nose that prevents proper airflow. Whatever the reason, it’s important to determine the cause why your baby is always congested and address it as soon as possible.