What causes left lower abdominal pain after defecation, and what should be done about it?

Pain in the lower left abdomen after defecation may be caused by physiological factors as well as pathological conditions such as indigestion or enteritis, and most cases can be relieved with medication. The specific analysis is as follows:

1. Physiological Causes

If a large amount of dry, hard stool accumulates in the intestines, after evacuating the final portion of stool from the rectum, intestinal peristalsis may irritate the bowel wall, leading to the aforementioned symptoms. It is recommended that patients use medications such as Runchang Capsules or Lactulose Oral Solution under medical guidance to improve the condition.

2. Pathological Causes

1) Indigestion

Indigestion is a disorder caused by impaired gastric motility. If affected, gastrointestinal peristalsis may slow down, causing food to accumulate in the intestines and trigger irritation, resulting in the symptoms described above. Patients may follow medical advice to take medications such as Lactasin Tablets or Jianwei Xiaoshi Tablets for treatment.

2) Enteritis

Enteritis can be triggered by various factors including microbial infection and ischemia. Patients with this condition may experience the aforementioned pain due to inflammatory stimulation. In such cases, patients may follow a doctor's recommendations to take medications like Norfloxacin Capsules or Ciprofloxacin Hydrochloride Tablets to alleviate symptoms.

In addition to the above causes, this symptom may also be associated with ulcerative colitis, Crohn’s disease, or rectal tumors. Patients should seek timely medical evaluation to avoid adverse effects on their health.