What causes bloating and pain in the lower abdomen?

Abdominal pain is a common clinical symptom and a frequent reason prompting patients to seek medical care. It often results from intense stimulation or injury to intra-abdominal tissues or organs, but may also originate from thoracic disorders or systemic diseases. Moreover, abdominal pain is a subjective sensation; its character and intensity are influenced not only by the nature of the underlying pathology and degree of stimulation but also by neurological and psychological factors. So, what causes lower abdominal distension and pain? The following section addresses this question.

What Causes Lower Abdominal Distension and Pain?

1. Colicky Pain

In many women, lower abdominal pain manifests primarily as colicky pain—caused by smooth muscle spasm—characterized by a twisting, cramping sensation. Numerous conditions can trigger such colic, including urinary or biliary stones, intestinal obstruction, and acute enteritis; these often produce severe, debilitating colicky pain. Some patients experience not only colic but also sharp, stabbing pain—as if pierced by a needle—commonly associated with peptic ulcer disease and other gastrointestinal disorders.

2. Uterine Pathology

Some women experience both lower abdominal pain and bloating, indicating abnormal uterine pathology. Specifically, when endometrial-like tissue grows outside the uterus—in locations such as the fallopian tubes, ovaries, or outer surface of the bladder—this condition (endometriosis) commonly leads to lower abdominal pain and distension. Symptoms may intensify in the days just before or after menstruation, during which ectopic tissue may undergo cyclic bleeding, causing localized inflammation and tissue damage.

3. Distension-Related Pain

Many women frequently experience abdominal bloating in daily life, typically due to excessive gas accumulation within the gastrointestinal tract. This discomfort becomes especially pronounced after prolonged sitting—for instance, during long train journeys, where lower abdominal distension and pain are commonly reported. Experts attribute this to excessive intestinal gas; if not promptly expelled, the resulting distension and pain persist.

4. Ovarian Cysts

Ovarian cysts can also cause lower abdominal pain. Affected women often report additional symptoms, including menstrual irregularities and dysmenorrhea. Furthermore, lower abdominal distension and pain may occur both during physical activity and upon standing after prolonged sitting.

The above outlines potential causes of lower abdominal distension and pain. We hope this information proves helpful.