If you're a new parent, you may be wondering how to identify if your baby is allergic to breast milk. While rare, it is possible for a baby to have an allergy to certain proteins in breast milk. Signs of an allergic reaction can include eczema, hives, vomiting, diarrhea, or difficulty breathing. If you suspect your baby may have an allergy, consult with your pediatrician who can evaluate the symptoms and guide you through the process. Remember, it's essential to continue breastfeeding unless advised otherwise by a healthcare professional, as breast milk provides vital nutrients and benefits for your baby's overall health.