What causes bloating and abdominal pain when lying flat at night, and what should I do about it?

Abdominal bloating and pain when lying flat at night are usually caused by physiological factors, but may also result from pathological conditions such as indigestion or bile reflux gastritis. Specific causes are as follows:

I. Physiological Factors

If patients do not pay attention to dietary regulation during dinner—such as overeating or binge eating—it can place an excessive burden on the gastrointestinal tract, leading to the aforementioned symptoms. This condition does not require special treatment; maintaining healthy eating habits and avoiding overeating can effectively relieve symptoms.

II. Pathological Factors

1. Indigestion

Patients who already suffer from gastrointestinal indigestion may experience abdominal bloating, gas, or pain after consuming hard-to-digest foods, resulting in the above symptoms. In such cases, patients should visit a正规 hospital and, under medical guidance, take medications such as mosapride citrate tablets or domperidone tablets.

2. Bile Reflux Gastritis

When substances such as pancreatic juice or bile flow backward into the stomach, they can irritate and damage the gastric mucosa, causing the symptoms described. Patients may take medications such as hydrotalcite tablets or amoxicillin capsules as directed by a physician.

In addition to the above, similar symptoms may also be caused by erosive gastritis, intestinal polyps, colorectal cancer, etc. It is recommended that patients seek timely medical evaluation at a hospital to determine the underlying cause and receive appropriate treatment.