What causes lower abdominal pain?

There are multiple causes of lower abdominal pain, mainly including: 1. Improper diet, such as frequently consuming spicy or irritating foods, which may irritate the intestinal mucosa and cause abdominal pain; 2. Digestive system issues, such as appendicitis and enteritis, often accompanied by symptoms like diarrhea and nausea; 3. Urinary system problems, such as cystitis and urinary tract infections, typically presenting with frequent and urgent urination; 4. Reproductive system issues, such as dysmenorrhea and pelvic inflammatory disease, commonly seen in women, and may be accompanied by menstrual irregularities and pain during intercourse; 5. Other conditions, such as peritonitis and intestinal obstruction, can also lead to lower abdominal pain.