Why does my lower abdomen feel bloated, with the urge to defecate but unable to pass stool?
May 15, 2023
Source: Cainiu Health
Dr. Zhou Chao
Introduction
Abdominal bloating and constipation may be caused by physiological factors or pathological conditions such as gastrointestinal dysfunction, hemorrhoids, etc., and appropriate symptomatic management should be provided based on the specific situation. If daily food intake is relatively low or fluid intake is insufficient, intestinal contents may become dry, increasing friction against the intestinal wall during movement, which slows peristalsis and increases pressure within the intestinal lumen.
Abdominal bloating with the sensation of needing to defecate but being unable to do so generally refers to bloating and constipation. These symptoms may be caused by physiological factors or pathological conditions such as gastrointestinal dysfunction or hemorrhoids. Appropriate management should be based on specific circumstances. Detailed analysis is as follows:
I. Physiological Factors
If daily food intake is low or fluid consumption is inadequate, intestinal contents may become dry. This increases friction against the intestinal wall during movement, slowing peristalsis and increasing pressure within the intestinal lumen, potentially leading to bloating and constipation. It is recommended to increase fluid intake appropriately and engage in physical exercise to promote bowel movements.
II. Pathological Factors
1. Gastrointestinal Dysfunction
Excessive mental stress or prolonged anxiety may increase digestive tract sensitivity. After eating, food may not be properly digested and remains in the stomach and intestines, increasing feelings of fullness. Bacterial decomposition of undigested food produces gas, resulting in these symptoms. It is recommended to take medications such as lactulose oral solution or wheat dextrin granules under medical guidance.
2. Hemorrhoids
Prolonged straining during bowel movements can increase pressure in the anal area, causing abnormal dilation of local blood vessels and formation of protruding tissue (hemorrhoids). This may narrow the anal opening, making it difficult for stool to pass and leading to fecal accumulation in the intestine, resulting in the aforementioned symptoms. It is recommended to seek hospital treatment, where excess tissue can be surgically removed.
In addition, such symptoms may also result from other medical conditions including Hirschsprung's disease (congenital megacolon), diabetes, or cerebral infarction. It is advisable to perform gentle abdominal massage in daily life to promote intestinal motility.
