What are the symptoms of breast milk allergy in newborns?

Neonatal breast milk allergy primarily manifests as rashes, along with symptoms of gastrointestinal dysfunction and possible abnormalities in bowel movements.

1. Rashes

When newborns are allergic to breast milk, after feeding they may develop rashes on the face, neck, trunk, or limbs. These rashes are often eczema or urticaria. Initially appearing as small red spots, they may merge into larger patches in severe cases, accompanied by fluid oozing.

2. Gastrointestinal Dysfunction

Allergic reactions can also lead to gastrointestinal disturbances, including nausea and vomiting after breastfeeding, bloating, abdominal pain, and diarrhea. If breastfeeding continues, the infant may show resistance and increased crying. Allergies can cause edema of the gastrointestinal mucosa, impair nutrient absorption, and result in slow weight gain.

3. Abnormal Stool

Newborns allergic to breast milk may experience diarrhea and pass stools containing blood streaks, with fecal occult blood test positive. Mothers should avoid eating beef, mutton, and various seafood that may trigger allergies. In severe cases, breastfeeding should be discontinued temporarily and replaced with an extensively hydrolyzed formula.