Ay, heat rash yan most likely, especially ngayong mainit na panahon! A few of us moms noticed it sa aming kids kapag mainit at nagswesweat sila ng todo-todo. Best thing is to keep the area dry and cool, mag-dress ng malambot na cotton lang, avoid tight clothing, at if kailangan mag-powder use talc-free ones na safe para sa sensitive skin. Pero kung hindi ito lumalaki after a week or nagmumukhang infected na, better check with your pediatrician para sure kung ano talaga at for the right treatment, kasi sometimes it needs topical cream from the doctor.