Why hasn't my baby had a bowel movement for two days but is only passing gas, and what should I do?

Generally speaking, flatulence refers to gas passage. If an infant has not had a bowel movement for two days but continues to pass gas, it may be related to factors such as immature digestive system, formula feeding, indigestion, lactose intolerance, or intestinal obstruction. If any discomfort occurs, it is recommended to seek medical attention promptly and receive symptomatic treatment under the guidance of a doctor. Specific analysis is as follows:

1. Immature infant digestive system

An infant's immature digestive system may cause food to remain in the intestines longer than usual, especially when intestinal motility is weak, which can lead to prolonged intervals between bowel movements and gas passage without stool. No special treatment is required, but caregivers should closely monitor the infant's feeding patterns and bowel habits.

2. Formula feeding

Compared with breastfed infants, those fed with formula may experience longer intervals between bowel movements, resulting in gas passage without defecation. Trying a formula suited to the infant’s digestive characteristics—such as one containing prebiotics—may help promote gut health and regular bowel movements.

3. Indigestion

Due to the infant's immature digestive system, insufficient secretion of digestive enzymes or uncoordinated intestinal motility may lead to indigestion. This results in inadequate digestion and absorption of food in the intestines, potentially producing excessive gas (increased flatus) while reducing stool volume. Symptoms may include bloating, reduced appetite, and irritability. Under medical guidance, medications such as lactulose oral solution, Jianwei Xiaoshi tablets (digestive aid), or Bifidobacterium quadruple live bacteria tablets may be used to relieve symptoms.

4. Lactose intolerance

Lactose intolerance caused by lactase deficiency, or allergic reactions or sensitivities to certain food components, may lead to abnormal bowel movements, including passing gas without defecation. Other symptoms may include rash, diarrhea, vomiting, and irritability. Under medical supervision, medications such as lactic acid bacteria tablets, triple live Bifidobacterium capsules, or Bacillus subtilis live bacterial granules may be used to alleviate symptoms.

5. Intestinal obstruction

Intestinal adhesions after surgery or colorectal tumors may cause intestinal obstruction, preventing food residue and feces from passing normally through the intestines, leading to defecation difficulties and gas passage without stool. This condition may be accompanied by severe symptoms such as abdominal pain, vomiting, and abdominal distension. Prompt medical attention is advised. Under a doctor's guidance, treatments such as surgical lysis of adhesions may be performed to relieve symptoms.

Parents are advised to pay close attention to their infant's health, ensure a balanced diet, and seek timely medical care when needed, which may help alleviate symptoms.