Which is better for a four-month-old baby's buttocks, acidic ointment or erythromycin ointment?

Patient's question:

The baby has diarrhea and a red butt. Every time after a bowel movement, they wash it, but it's still red. Should they use acidic ointment or erythromycin ointment? The area where the penis and testicles touch is also red. Can they use the same two types of ointments? Is there any damage to the penis? Thank you!
What kind of help is needed: A four-month-old baby has diarrhea and a red butt. Should they use acidic ointment or erythromycin ointment? Thank you!

Doctor's answer:

According to your description, the four-month-old baby always has diarrhea, which may be a symptom caused by indigestion. It is recommended to give the baby oral medication such as Mimi Ai, probiotics, and Jianpi San for treatment. There should be a two-and-a-half to three-hour interval between meals. Between meals, give the baby some warm water to drink. Avoid changing diapers frequently, as this may lead to indigestion. After the baby urinates or defecates, immediately wash their buttocks. Change the diapers frequently, and it is best to use cotton cloth diapers instead of disposable ones. After washing, apply erythromycin ointment to the red buttocks and penis. Always keep the baby's buttocks dry.

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