There are many causes of flesh pain. Inflammatory infections that occur under the skin can manifest as flesh pain. Inflammatory infection in the abdominal cavity can lead to pain in the abdomen, tension in the abdominal muscles, and when a tumor is present in the abdominal cavity, it can also lead to pain in the abdomen of the patient. If inflammatory infection is manifested under the skin, there is redness, swelling, hard nodes, masses, and even abscess formation under the skin. Treatment is mainly oral antibiotics, and if there is abscess formation, the abscess also needs to be cut open and drained, the wound needs to be changed, and oral antibiotic treatment is required. Inflammation in the abdominal cavity, such as appendicitis or inflammation of the gallbladder, can manifest as pain in the right lower or upper abdomen, which needs to be surgically removed after a clear diagnosis. If there is a tumor in the abdominal cavity, it can also cause pain in the abdomen. If necessary, gastroscopy or colonoscopy or abdominal CT examination should be performed to further clarify the situation, and after that, radical tumor surgery is recommended.