Aiyo, skin rashes in babies can be tricky to figure out yourself because there are so many possibilities, could be heat rash, milk allergy, eczema, or just irritation from detergent or fabric. Better to bring your little one to the paediatrician or clinic so they can see it properly and tell you exactly what it is, then you'll know how to manage it. Kesian the baby if it's itchy! Let me know what the doctor says, okay.