A 2-month-old baby is in the transitional stage between newborn and infant. The baby has gradually become accustomed to life outside the mother's womb, has absorbed nutrients and eliminated waste through urine and feces. Therefore, a problem that many mothers are concerned about is the appropriate frequency of bowel movements for a 2-month-old baby.

Infants and young children often cannot communicate how they feel, but their stool can reveal many issues. Therefore, signs such as the baby passing frothy stool often worry parents. The phenomenon of a baby passing frothy stool is quite common in babies from 0 to 36 months old. So, is it normal for a baby to pass mucous, frothy stool?

The color and smell of a baby's stool are among the signs that reflect the baby's health and growth status. If a baby's stool has a sour smell, it could be a normal health symptom or a sign of various conditions that parents need to be aware of. Let's explore the causes of sour-smelling stool in babies through the article below.