What are the symptoms of constipation in a five-month-old infant?

Symptoms of constipation in a five-month-old infant mainly include the following: 1. Reduced bowel movements: Normally, a five-month-old infant has 1–3 bowel movements per day. However, infants with constipation may have significantly fewer bowel movements—only once every 3 to 5 days, or even as infrequent as once per week. 2. Difficulty passing stool: Infants may strain and turn red in the face during bowel movements. The stools are often dry, hard, and difficult to pass. 3. Abdominal bloating: Due to prolonged retention of stool, fecal buildup in the intestines can lead to abdominal distension. A drum-like sound may be heard when gently tapping the abdomen. 4. Decreased appetite: Gastrointestinal dysfunction may cause reduced appetite and decreased milk intake. If an infant shows the above symptoms of constipation, parents should promptly adjust the baby's diet and, if necessary, use probiotics or other safe and effective treatments under medical guidance.