Dull pain is the pain that is the obvious hallmark of disease lesions in the internal organs. Dull pain is different from stabbing pain and colic, and is usually caused by the pulling of the internal organs. The most common are digestive diseases, such as gastrointestinal inflammation, chronic colitis, chronic ulcerative enteritis can cause dull pain, cholecystitis, pancreatitis or chronic appendicitis, can cause dull pain attacks in the abdominal cavity, the dull pain is characterized by poor localization and uncertainty. In addition, dull pain can also occur in diseases of the urinary system, such as cystitis and nephritis, which can also cause dull pain in the lower back and lower abdomen, and the common gynecological diseases of women, chronic pelvic inflammatory disease and ovarian cysts, can also cause dull pain in the lower abdomen.