What causes significant abdominal movement in newborns?

Jun 18, 2025 Source: Cainiu Health
Dr. Zhou Xiaofeng
Introduction
In general, significant abdominal movement in newborns may be caused by the newborn's breathing characteristics, low subcutaneous abdominal fat, indigestion, pneumonia, intestinal obstruction, or other reasons. Symptomatic treatment is required, such as general treatment, medication, or surgical intervention. It is recommended to keep the baby's abdomen warm in daily care; a soft belly band or light blanket can be used to cover the baby's abdomen to prevent worsening of the abdominal movement.

Generally, significant abdominal movement in newborns may be caused by the newborns' breathing characteristics, little subcutaneous fat in the abdomen, indigestion, pneumonia, intestinal obstruction, and other reasons. Symptomatic treatments such as general treatment, medication, or surgical treatment may be needed. If any discomfort occurs, it is recommended to seek medical advice promptly and receive appropriate treatment under a doctor's guidance. Detailed explanations are as follows:

  

1. Breathing Characteristics of Newborns

During the newborn stage, because the respiratory system has not fully matured, abdominal breathing is often the primary breathing method. During abdominal breathing, the diaphragm moves significantly up and down, resulting in noticeable abdominal movement. This typically does not accompany other symptoms and requires no special treatment. Parents should observe carefully and ensure the newborn's breathing remains steady and free of other discomfort.

2. Little Subcutaneous Fat in the Abdomen

Newborns have little subcutaneous fat in the abdominal area, making abdominal movement more apparent during breathing. This also typically does not accompany other symptoms and requires no special management. As the newborn grows, subcutaneous fat will gradually increase, and the symptom will resolve on its own.

3. Indigestion

If a newborn consumes excessive amounts of food at once or is fed improperly, indigestion may occur, leading to abdominal distension and symptoms such as significant abdominal movement and discomfort. It is recommended to adjust feeding practices and, under a doctor's guidance, use medications such as infant spleen-strengthening powder (Babies' Bile Powder), Bifidobacterium capsules, or digestive tablets for children (e.g., Jianwei Xiaoshi Pian).

4. Pneumonia

Pneumonia is mainly caused by infection with bacteria, viruses, mycoplasma, or other pathogens. When inflammation occurs in the lungs, respiratory mucosa becomes congested and swollen with increased secretions, affecting airway patency and causing significant abdominal movement. This may be accompanied by symptoms such as coughing, sputum production, and fever. It is recommended to use medications such as amoxicillin-clavulanate potassium granules, cefixime granules, or ambroxol hydrochloride tablets under a doctor's guidance.

5. Intestinal Obstruction

Intestinal obstruction refers to a blockage in the passage of intestinal contents, which can be caused by various factors such as intussusception or intestinal volvulus, leading to abdominal distension and pain. Infants often display symptoms such as severe abdominal pain, vomiting, inability to pass stool or gas. It is recommended to undergo surgical treatments such as adhesion lysis or bowel resection and anastomosis under a doctor's guidance.

It is recommended to keep the baby's abdomen warm in daily life. A soft belly band or light blanket can be used to cover the baby's abdomen to prevent exacerbation of abdominal movement symptoms.