This symptom may be caused by plant nerve dysfunction after anger, resulting in painful spasms in the intestines of the abdomen. It is also possible that anger may lead to nervous tension, causing vasoconstriction of the intestinal tract in the small abdomen, resulting in Qi stagnation and blood stasis, causing pain in the small abdomen. If the patient suffers from irritable bowel syndrome and gastrointestinal dysfunction, anger will significantly aggravate the condition and cause pain in the small abdomen. Some people have gynecological diseases, and anger may also lead to aggravation of the original disease, resulting in abdominal pain. For older male patients with prostatitis or prostate enlargement, anger can also aggravate the condition and cause pain in the small abdomen.