If an infant has an unusually frequent bowel movement, it can irritate the anal mucosa, leading to redness and swelling around the buttocks. After each bowel movement, it is recommended to thoroughly clean the anal and buttock area with lukewarm water, then dry the area with a cotton cloth. It is advised to consult a pediatrician for a check-up to determine the cause and receive appropriate treatment. Diarrhea is often seen in cases of indigestion and enteritis. If there is no improvement after a period of time, it is necessary to promptly take the child to a local hospital’s pediatric department for medical treatment.