Many antibiotics cause diarrhea. This is not an allergic reaction. Antibiotics can upset the natural balance of bacteria in the digestive tract. Too many of the wrong kind of bacteria in the digestive system can cause diarrhea.
The diarrhea is usually mild and will not cause a child to become dehydrated or lose weight. The stools return to normal 1 or 2 days after the child finishes the antibiotic treatment.
Your child does not need to stop taking the antibiotic. Anti-diarrheal medicines are not necessary. Follow a regular diet with a few simple changes:
Sometimes the diarrhea causes a rash around the anus. Wash the irritated area with water and then protect the skin with a thick layer of petroleum jelly or other ointment.
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