What Does It Mean If Your Baby Can't Tolerate Milk?
Milk allergy is one of the earliest allergies in infants. When a baby cannot tolerate milk, it's typically an immune system reaction where the body mistakenly identifies proteins in cow's milk or formula as harmful invaders. Importantly, distinguish this from lactose intolerance, which is a digestive issue rather than an immune response—lactose intolerance means the body struggles to break down lactose sugar. Both conditions are uncommon and often resolve by age 3.
5 Signs Your Baby May Not Tolerate Milk
These warning signs indicate your baby may not tolerate milk—consult a pediatrician promptly for proper diagnosis and guidance.
- Inconsolable crying after feeds: If your baby cries intensely after every bottle or even during feeding, rule out issues like nipple flow or positioning first. Persistent crying often signals a milk issue.
- Excessive spitting up: Some reflux is normal, but frequent, abundant regurgitation paired with poor weight gain points to milk intolerance.
- Vomiting and diarrhea: Projectile vomiting after feeds or multiple episodes, along with frequent, watery, foul-smelling stools, requires immediate medical attention and possibly a hypoallergenic formula.
- Facial swelling or rashes: Itchy red patches or hives on the face or body, or unexplained swelling, are classic allergy signs linked to cow's milk proteins.
- Excessive gas: Frequent, foul-smelling flatulence, bloating, and irritability suggest the baby cannot tolerate their milk.
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