Diarrhea in Infants: When to Worry About Your Baby's Stool - Pediatrics

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Suspected diarrhea


Hello Doctor, my baby is now 22 days old and primarily on formula (Nutrilon hydrolyzed).
Previously, the average number of bowel movements was over 8 times a day, but yesterday it reached more than 10 times, with some being quite loose.
It seems like there was some watery stool as well, but the color has been normal yellow.
Additionally, the baby appears uncomfortable while having bowel movements.
This morning, I observed the stool again and found it to be somewhat loose, with some pasty consistency.
Is this normal, or does it indicate diarrhea?

Erica, 30~39 year old female. Ask Date: 2021/12/02

Dr. Xiao Kaiwen reply Pediatrics


The frequency of bowel movements has increased compared to normal, and the water content of the stools has also increased.
This is defined as diarrhea, and it is recommended to consult a pediatrician for evaluation.

Reply Date: 2021/12/02

More Info


When it comes to understanding diarrhea in infants, especially in a newborn who is just 22 days old, it's essential to differentiate between normal stool patterns and signs of potential gastrointestinal distress. In the case of your baby, who is primarily on a formula diet, several factors need to be considered.

Firstly, it's important to note that infants, particularly those on formula, can have varying stool patterns. Typically, a newborn may have anywhere from several times a day to once every few days. The frequency can be influenced by the type of formula, the baby's diet, and their individual digestive system. In your case, having 8 to 10 bowel movements in a day, especially if they are soft or watery, could indicate diarrhea, particularly if the consistency is more liquid than usual.

The color of the stool is also a crucial factor. Yellow stools are generally considered normal for breastfed infants, and formula-fed babies may have a range of colors from yellow to brown. However, if the stool is watery and accompanied by signs of discomfort, it may suggest diarrhea. The fact that your baby appears uncomfortable while passing stool is another indicator that something may be amiss.

Diarrhea in infants can lead to dehydration, which is a significant concern. Signs of dehydration include decreased urine output (fewer wet diapers), dry mouth, lethargy, and irritability. If your baby shows any of these signs, it is crucial to seek medical attention promptly.

In terms of management, if you suspect that your baby is experiencing diarrhea, it is advisable to monitor their hydration status closely. Ensure that they are feeding adequately, as formula provides hydration. If the diarrhea persists for more than a day or two, or if you notice any blood in the stool, a significant change in behavior, or any other concerning symptoms, you should consult your pediatrician immediately.

Additionally, consider any recent changes in the baby's diet or environment that could contribute to gastrointestinal upset. For example, if there was a recent switch in formula or if the baby has been exposed to illness, these factors could play a role in their digestive health.

In conclusion, while some variability in stool patterns is normal for infants, the presence of frequent, watery stools, especially if accompanied by discomfort, warrants careful observation and potentially a visit to the pediatrician. It's always better to err on the side of caution when it comes to the health of your baby, particularly in the early weeks of life when they are still adjusting to the world outside the womb.

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